I know that we already have a ticket going about the international keyboard issues, but I'm still interested:
Is it possible to send Alt Gr+[key] hits from OS X to Win 7?
Right now I'm using Hungarian layout and it's impossible to enter several important characters, like ";", "{", "}", "[", "]", "@" etc. because for OS X the Alt Gr is the same as Alt. (I'm using a PC keyboard on a Mac mini.)