Cheap AV-amp with 5.1 pre-outs


Guys, Im looking for a cheap AV-amp/receiver with good DTS/DD processing that also has a 5.1 pre-out, so I can use my main stereo amp to power the front speakers and use for normal stereo sounds. Any (and since the bank called I have to state this: CHEAP!!) suggestions?

Satch.
satch
Yes, you're right, that is the cheapest solution, but my computer is on the other side of the house, so it would be more convenient to have a 'real' av amp around. Thanx anyway!
Perhaps look at the harman kardon avr series (320 etc). They have good processing and provide full preouts.
Thanx Efritz, but I managed to found a used (and cheap) Yamaha DSP E-800, which satifies my needs (for the time being ofcourse :)).
Some Denon recievers have the 5.1 out, some of the older ones are really cheap. I just recieved the AVR-3600 and it will act as a pre-amp.

Jake