first to answer without saying "boot camp" gets a warp whistle!
[UPDATE]
i was actually searching for how to do this the other night and the first result from google was my own post from nearly 4 years ago! wowza!
since i've figured out the answer to my own question, i thought i'd leave it here in case anyone needs to know... maybe even for my own future reference
these instructions are for using toast titanium 8, though any version should suffice.
CCD (cloneCD image)
1) select the "copy" tab
2) choose "image file"
3) select the .img file
4) burn!
single BIN/CUE
1) select the "copy" tab
2) choose "bin/cue files"
3) select the cue file
4) burn!
multiple BINs
1) select the "copy" tab
2) choose "multi-track CD-ROM XA"
3) select the BIN files
4) to be safe, check the cue file to make sure the block sizes match in the toast window
5) burn!
i've yet to come across any ISO files, but i think the CCD method should work for those too.