Nice ! I did the same "mod" although I did not fish the cables through the case and I ordered eht official power cable. What monitor are you using? I have a sceptre 22" and I can detect a slight video interference in the main menu. The interference was much worse while using ati displays UB and most noticeable on shades of grey such as this:
http://www.hardforum.com/index.php?
Let me know...