How to run 2 x off camera flashes with Q10 ?
As per Perry I think you'll have to go down the manual exposure route with wireless flash triggers (most probably of eBay, think Cactus or CTR-301s). If you don't require your Canon flashes anymore you coould sell them and make a profit or keep them and use them in manual mode.
On my Pentax DSLRs I have a host of old Nikon SB26s and 24s. Pretty easy to setup manually.