I have been receiving the following message "Internet Explorer has stopped
working. It tells me it has to do with some Add-Ons. I have followed the
steps to correct it but has not worked.  Windows Vista has giving me alot of
problems.

Hi there im not very good at this computer stuff and have been to other areas
which have not been any help so i hope that someone can help me asap as im
about to throw this thing away.
Whenever i try to open a pdf file on a web page i get the following message.

Can you run Explorer 6 and Explorer 7 on the same machine?
I prefer to use Explorer 7 but there's a site I use for work that will only
work using Explorer 6. So can I run both browsers on the same machine without
creating a problem?