Virus

Alright. So i downloaded a crack for a game from some website I've never seen before. I opened the crack. Soon after, there was an error, and now my desktop icons and start toolbar are hidden. Pressing the Windows key does nothing. However, i'm able to open Task Manager, which i did, and it's the only way i was able to get online to post this.

tl;dr, Virusowned, halp?

Alright, i found the two viruses. problem is, i can't delete them. I've tried using Eraser, just clicking delete, and using a spyware program to delete them. It says they're being used by another program.