[n00b on demand]

Ok so heres the story...

I dont have any of the CD's my computer came with. We had a 5 foot flood in our basement last december that pretty much wiped everything out. Everything got thrown in the garbage. So I reinstalled windows on my comp about 2 months ago because everything was going screwy. I used my friends windows xp CD. I didnt need my printer untill now....and i downloaded the drivers from the Lexmark site. Its a lexmark z705 printer connected by USB. Ive connected it and disconnected it like a million times and can't install the printer because the comp keeps telling me there is no printer found. Any suggestions on where I should go from here?