I'm having trouble seeing what you want to do: Do you want to replace your current setup with something more functional or do you want to get it up and running?
To simplify manners, any speakers requiring speaker wire are likely passive speakers, which draw power to run at a listenable volume off of the amplified signal, so you'll need an amplifier. Amps come in pretty much all shapes, sizes and price ranges though, so there's little reason to avoid one.
Problem is, we can't recommend a specific amplifier without knowing the specifications of the speakers. Their resistance rating, maximum power handling, effiacy per watt ect. In addition to the brand name, we'd at least need a model number to look up a spec. sheet online at the very least. (Even then, I wouldn't be the best person to ask)
While I can't make a specific suggestion, what I can do for you is point you in a general direction: If all you want is a stereo setup, Class T amplifiers
are typically said to be very small, efficient and clean sounding for a relatively cheap price. Dayton, Lepai, SMSL and MUSE are a few brand names to look into if you're interested in looking for one. (Careful about the Daytons though, since their DTA 100a, while perhaps the best looking one on paper, has some poor reviews regarding poor and potentially hazardous quality assurance issues.)