Tokyo Extreme Racer 2 Save Game Fix!! HELP!!!

Well, the thing is i don't understand how to do step 3, it is veeery confusing. It is as follows:
3. Create the data ISO: MKISOFS.EXE -C 0,11700 -V TXR2_ECH -l -o C:\TXR2\DATA.ISO C:\TXR2\DATA
This will create C:\TXR2\DATA.ISO from the files in C:\TXR2\DATA\

Thanks for the help.