Sync through Auth Proxy

I've got my mac setup on a proxy that requires a password, but BlitzMax doesn't seem to accept the appropriate means of telling it what it needs to know to get through to Sync Mods. Unlike the last guy who had this problem (whose post I read that was a year old), I can't take the computer home, setup there and sync then bring it back to work. Has anyone had any luck since then?

Thanks,
-Tyler