If all you need is an integrated amp to drive your computer speakers, a Kenwood KA-2002A is fairly compact relative to a typical receiver.....http://audiokarma.org/forums/showthread.php?t=41770&highlight=ka-2002
I have also been pleased with a Technics SA-104, and SA-106 receiver.
I have also been pleased with a Technics SA-104, and SA-106 receiver.