It seems that this programme is a pain to eliminate -I tried it to see if I could replicate your problem and I could!
Although there is a way to do it the simplest solution would be to run a System Restore to a time before you installed this programme. This would serve to remove all the registry entries that this programme makes. Although these can removed if you are happy about editing the registry System Restore is easier and quicker.
If this is not possible, post back and I'll post the other solution.