So since I upgraded from win2000 to XP, when I open an attachment directly from outlook express I get - "Not a valid win32 application." message. I can download the file to the hard drive THEN open it, but I like to open sometimes without actually saving to the hard drive. I get the SAME message when I try to open a file directly from Winzip. Again. I have to UNZIP and save to the computer, where before I could open directly from Winzip.