I googled "McAffee security centre uninstall + Dell" and got instructions on how to remove three components and the order to remove them in (Securtiy Centre was last). The instructions advised to reboot after each unintstall.
I had some difficulty installing my employers antivirus software (mcAfee 8.0i) on the dell Machine but Dell support talked me through the installation. I was getting gtb.exe errors (gtb = google toolbar)
I also got rid of the google desk which was installed in the machine. Dont get me wrong, I think google desk is a fine product I just dont want it pre installed on my machine.
A few days later I got rid of Norton Ghost this freed up a good bit of space on my hard drive.