> I don't think so, I check the web and FAQ and it said no full screen
>

FYI, I just finished playing Capcom vs SNK 2 on Chankast and I was playing it full screen.

I simply started the game, then pressed Right-Alt + Enter.

Also, from the Chankast home page:

07/07/2004: Chankast Alpha 0.25 released

- FullScreen and multiple resolution support
- CPU core bugs fixed
- VmsBrowser integration
- LCD CMU support
- LCD VMU emulation
- Rumble pack emulation
- Control and CD plugin support
- Windows 2000 compatibility (ASPI driver)
- Command line support to run home made binaries