Been to Control Panel, Uninstall Programmes
This rarely does a proper job - all it does is run the programmes own un-installer, which will remove as much (or as little) as the original developer intended. In fact most programmes spread files and settings all over your computer. The chances are one of these has been able to re-infect it. If you want properly remove some software, use a dedicated utility like "Revo Uninstaller" - and run the "Full" option. You will be amazed what it finds! But DO check carefully exactly what registry items are ticked before deleting them. I always expand the "Tree View" and ensure only the bolded ones are selected.
The "Portable" freeware version is perfectly adequate for most purposes, and doesn't need to be installed itself. You can put it onto a memory stick, and run it from there. Admittedly this isn't claimed to be capable of removing "remains" of previous programmes - likely in your case - you'll need the "Pro" version for that, but use it for any future jobs, rather than Windblows own version.
Code:
http://www.revouninstaller.com/revo_uninstaller_free_download.html