I have 2 win7 64bit, i7 machines and want to share files/drives between. One machine (machine #2) lets me share its files but is very slowwwwwwwwwwwwwwwwwwwwwwwwww. The other machine (machine #1) won't let me share any folder/files (and map a drive for that matter) at all and gives me an error...