Does windows update work....Try going to run,type:services.msc In msc,scroll
down to windows installer,double click,set to:auto start Then start service,
close out.Now try installing
Unfortunately, you haven't given us any information about your system so
we can help you. It can be very hard for a non-technical person to know
what to include in a post to a tech support newsgroup. Here is a link
that will help you with that - http://www.dts-l.org/goodpost.htm
After you've gone to that link, post back with all pertinent information
and someone will help you.