Of course it's possible. Recently I was running an old ide optical dvd burner off an ide port while running a new sata hardrive off one of the sata ports. If you need a new hardrive and don't need much storage space, Newegg or amazon had the Intel 80 gb ssd for $199 recently. Kingston also makes good ssd's. If you don't have a bracket for the smaller ssd, you can just use mounting tape and place them on top of your old hardrive.