hi guys thanks for all your advice & help...
i finally got the download and installation of etrust ez antivirus ALL SORTED OUT.
after trying the different suggestions to no avail it helped me narrow down the problem, here's what i did if it's of any use to anyone who might ever have the same problem as me!!! with a download. just a (suggestion)...
i had some cookies that i had manually edited and blocked in FF cookies exceptions tab (doubleclick etc) i just removed them from ff exceptions.
tried the download and installation again...then all was good!!!!
i also had some of the same cookies blocked in IE along with the ie-spyad block list.
the last thing i done was PUT ALL THE COOKIES THAT I REMOVED BACK (peace of mind & security) and everytings running fine. once again THANKYOU for all your HELP.