When I used to use my computer to drive computer speakers, I bought two pair of the ProMedia 2.1's, stacked the woofers on top of each other and put the satellite speakers on stands, truthfully, it blew away most home stereos.
Now I use an Soundblast X-Fi Extreme audio card, a soundblaster digital I/O module which allows me to connect a SPDIF cable to my receiver and drive my RF-52's and RC-52.
I once has trouble with a control pod, which was easily replaceable from the Klipsch parts dept, the conrol pod slides right off. Another thing you can do is have the speaker power hooked up to a power spike suppressor. Hiss, never had the problem, got an odd noise once, woofer turning on and off, turned out to be a bad control module.
Good luck and go forward, remember two sets are better than 1.
"You're gonna eat lightening and crap thunder..You're gonna be a very dangerous person."
Mickey Goldstein to Rocky Balboa
Enough Klipsch products, which only leads to the desire for more.