So I bought a Luna 2 card and it came with V5.1 Scope. I plugged it in and im like, okay! time to bang out some tunes. Of course polyphony is at extinction level on this thing.  
 
 So I make the effort to purchase 2 6dsp cards(ebay 

 ), one almost got snuffed from me but I fought back(it came with a few premium plugs on it, Sixstring was one of them 

 ), meaning no fast food or extra goodies for a couple weeks. lo and behold as im paying for the cards, it dawned on me...oh crap, I've only got 2 pci slots 
 
I found a cpu and ram compatibale motherboard with a 775lga and ddr2 memory and 3 pci slots, by Biostar on newegg, but the reviews use words like DOA, CRAPPY, DIED ON ME, etc. 
So my question is can I use a  Pci-express to Pci converter for one of the cards?