I would love to take a class while in the States, but I travel quite a bit for work and just wouldn't have large blocks of time to devote.

Does anyone have suggestions or recommendations for either audio, online or software programs to learn French? Rosetta Stone, Pimsleur, Rocket... these are a few of the programs I have heard of. I'm constantly going to iTunes to download the free French podcasts which litter the internet but I'd like something more structured.

I'm up for a transfer to Paris via my work and would really like to get a head-start on the language (obviously). Thanks for your comments in advance!