Gc-tool or .iso?

Hello, I'm new to the whole GC scene, I've got a GC .iso mario party 6, it's 1.35 gig, I have a qoob sx chip, I was hoping to write it with DVD decrypter, but when I try to open the .iso (mode>ISO>write) it fails to open ('Invalid or unsupported image file format!')I've used GC-tool to extract all the files, but I'm not sure what to do next? is it possible that I just need another program to burn the .iso like copytodvd ?

Thanks for any help

 

dont extract anything if you already got the .iso file (if its rar, then do)

burn it with a program called "imgburn"

in my opinion its the best free solution. you could get nero 6 dont get nero 7, as some people say its bad for gamecube iso burning.

regardless what program you use remember to finalize disc

 

Thank you very much for the help, I'll keep you update to date on how it works out.

 

Thanks Padrons for your help earlier, I've written the .iso now, and it works fine, the only trouble is that the game is in black and whit, I have a qoob sx, I live in the UK and have a NTSC game cube, I bought a PAL booster, and it seems to have worked for most games, I've changed it to 'pal' in the qoob menu. Do you know anyway to solve this?
Thanks