Use php if possible... it is easier and more similar to CFML than you think, so don't be afraid.
1) Start with the contact form solution pack and get it working.
2) Then add the radio buttons and get them looking the way you want
Then you will be ready to tie the radio buttons into the email from field. This won't be too difficult, but I suggest you post back here once you have the first two steps completed and it will be relatively easy to give you the line or two of code you need to get the rest done.