Need some help on Jet grind radio fix...

[ghostown]

Can ne1 help me on this Jet Grind Radio Internet Fix and Costume Change.
When I run this command in dos prompt "mkisofs -C 0,0 -l -V JGR_CUBE -o data.iso data" I getting bad command or file name. Do I need a program call mkisofs ? if so, where can I download this program.

Please Help Please....

Thanks