If you are using one of EVGA's power supplies, they sell groups of individually sleeved cables in their store:
http://www.evga.com/Products/ProductList.aspx?type=10&family=Power+Supplies&chipset=+Power+Supply+Cable+Set+(Individually+Sleeved)
 
If you are using another brand PSU there are various websites that offer custom sleeving. Or you could buy cable extensions that are individually sleeved:
http://www.performance-pc...ku=&news_from_date[from]=&news_from_date[to]=&brand[]=2157&psu_style=&keyboard_style=
 
 

cablemod did a great job on my set but i would advise to avoid the dual 6+2pin for the GPU's. its near impossible to get the second one to look good.
 

Hey, thanks everyone for the feedback.  I'm a busy dude and  haven't really had time to finish everything up yet.  Here's what I have so far:


For some reason, the pictures don't do it much justice.  In person it looks amazing.  The blue/red color scheme is gorgeous, and the aesthetics are getting better as I adjust things.  It still needs some work though. 

Step 1: find a good home for the LED strips.   As you can see, they're dangling at the moment, as I haven't bothered to attach them permanently.  Can anyone suggest a good place to stick them so they will provide good illumination, but wont be in the way?


Step 2: Deal with the other cables.  The following cables are visible and extremely ugly with red/yellow/white wires sticking out from the braided covering:
-the cables connecting to my GPUI
-the 24 pin
-the two 6-pin power cables attached to the top of my mobo

I would like to re-route and or replace each of those cables in such a way that they're minimally visible, and color-coordinated.  This is my first time secondary cables, so I'm not sure what I should get.  Someone provided this link 
http://www.evga.com/Products/ProductList.aspx?type=10&family=Power+Supplies&chipset=+Power+Supply+Cable+Set+(Individually+Sleeved)

Which is awesome, but I'm not sure exactly which cables to purchase.  I have an EVGA SuperNOVA NEX750B Bronze Power Supply.  It seems that the 16-pin is not modular/detachable, and it's too short to route through the gromets, so it seems I'll have to purchase an extension of some type.  
 
Can anyone recommend which cables I should purchase to suit my needs for this setup?  Thanks

Power Supply Cables from EVGA Site are only for G2/P2/T2 and GS/PS models.
That mean Gold, Platinum and Titanium.

Thanks for the feedback everyone.
 
It sounds like going with some individually braided extension cables is going to be the best strategy for me to clean things up.  I'll probably pick some up this weekend.  I was thinking of going with cablemod, because their products look very nice.  However, the more I think about it, the more it seems like it would be smart just to go with cables from EVGA - the guys I know, love, and trust.

Speaking of loving and trusting EVGA: I got an email from [link=mailto:James@EVGA]J[/link]ames @EVGA today.  He offered to send a replacement LED strip to me (because I mentioned something about mine yellowing here in the forums).  Very cool! I didn't even have to call the customer service number.  They contacted me first.  Thanks guys! 

Dat cable management, +1 for CableMod, below is my build - I used CableMod ModMesh Carbon, with CableMod Cable Combs in black:
 

Hey captainth rall I have a question regarding the stand you used for your case.. I willalso be putting mine on the floor and am looking for something like that.  Would it be possible for you to link me to the one you used?  My desk is already silver/glass so it is perfect.
 
I'd appreciate it, thank you.

As fare as led placement goes, it is not hard to remove the pre installed led strip and put your strip in its place.
Thats how i did it. works well.

Hey, I know this was from a year ago but I had a question about the PCI+e cables you used on your FTWs. Did you use two 8-pin connector wires instead of just one? That is to say, did you use two cables that just go | | or did you use one cable that splits into two, like Y? I apologize if this doesn't make sense, but that was about the best I could do to describe it in words. Thanks!

Behind the motherboard tray is really the best way to manage cables. It took me building my setup and then figuring out how I could manage the cables and a few weeks later I went and redid the cables again and got them slightly better still. I think that really it's something that even good equipment and cable management ideas off the it still will take a degree of trial and error.

Don't forget the zip-ties .... best invention for keeping wiring orderly !