Quickbooks Online

Has anyone tried running Quickbooks online from Linux?
They don't have Linux listed as a suppored OS but they do say they
support Netscape 6.X and above. I can't think of anything they may have
that would make it work on Netscape 6.2 on Windows but not on Linux.
Also I'm a little antsy about putting my finical data on someone else
server but unless anyone can make another suggestion my investors are
insisting I have something like quickbooks set up (would gnue serve this
purpose?).

Carl Parrish