easyC may work, but beware! LabView doesnt!
It installs nice and everything but as soon as it trys to use your COM port, it bombs out. At least this was my experience.
Granted, I was using Vista RC1 on a MacBookPro with an unsupported USB->Serial Converter....
And please don't spend *cough* (waste) *cough* your money on vista, at least not until more stuff is compatible with it (i.e. software and hardware). I still dont understand the several hundred dollar price difference in different versions of the same OS.....
Whatever. M$ ranting *over*...
Jacob