I can't post a link so search Google for "Custom Cable Connection" and it'll be the second link found.
They custom-make all their cables in Dallas, TX. I ordered all my projector cables from them for less than $200 and that included:
25-foot S-video to S-video
25-foot VGA to VGA
9-meter (27-foot) DVI-D to DVI-D
30-foot Component to Component
25-foot 3-RCA to 3-RCA
I was concerned about the length of the DVI cable but it works perfect between my Bravo D1 and Panny 300u. I also ordered from them because I wanted all black cables so they wouldn't be conspicuous coming out of the back of the projector mounted on the ceiling of my HT. When I ordered the cables the guy said something like "Yeah, we need to make some new VGA and DVI cables tomorrow" so you might be able to order a 40' DVI. Like I said, my 30-footer works perfect! Hope this helps!