my sis had a very similar virus, if not the same
opening any programs is imposible (incl control panel), so installing virus software, or deleting is not as easy.
1.pres ctrl,alt,del as you boot up your PC very quickly you may be able to open it before the virus opens, may take a few tries
2.find the process which does not look familiar (usu a large group of random numbers and letters)
3.write the process down on paper
4.end the process
5.search for the word you wrote earlier using start>search
6.delete it