I just put SNEX9x TYL and i know snex9x had the full screen option. I don't see it in tyl, is it there or no?

And

VBA, I also put that in psp but upon trying it, it quits. Yea I dnloaded a rom and changed the file to rom.gba as instructed..i even tried it with gbc to no avail.....

any reason as to why...plus i thought it was the software so i kx'ed it few times with different dnloads from different site..still to no avail..... help?