I have a rather new computer which works with windows XP. However, I need some help: When I try to install some programs as for example the msn messenger (free program!), the computer displays an error message like "the download was incomplete" or "the program is damaged". What's wrong? I'm logged in as administrator and should therefore be able to install certain programs. To make sure, that the program is indeed not damaged, I installed it on another computer. That was no problem. So, why doesn't it work on my computer? Can you give me some help? Thanks a lot!