I'd like to relocate my computers from my office to a room in the basement;
and just run really long keyboard/video/mouse cables to the office. 

This would require a run of about 25 feet tho.

Does anyone have experience with KVM cables (not involving a KVM switch;
just going from monitor to computer) that long? I've heard of people having
problems with pushing the keyboard signal that far; and I've seen RF
interference when crappy equipment is involved.

Any brands that anyone can recommend? 

Newegg lists companies like StarTech and CablesToGo.
http://www.newegg.com/Product/Product.aspx?Item=N82E16812196116
http://www.newegg.com/Product/Product.aspx?Item=N82E16812200137

Anyone have experience with these?

-- 
Carl Soderstrom
Systems Administrator
Real-Time Enterprises
www.real-time.com