Um, have you played the other two on PC (FF 7 & 8)? Characters were great looking, the pre-rendered backgrounds lookd like ASS. They look better thru ePSXe...but anyway to answer your Q.
The chances are naught. I e-mailed Square about it a long while ago, as I hadn't purchased the PSX version hoping they'd clean the pre-rendered pics up (8 PC looked better than 7 PC, so maybe...). Their reply was "we currently have no plans to release it on the Windows OS Platform."
In that same e-mail I asked about a sequel to Xenogears (my fav RPG Square made since Chrono Trigger), similar answer....no plans yadda yadda.