Actually, I had this problem as well (I have Vista), but managed to figure it out. I went to C:\Users\<Your Administrator Name> then did an advanced search. When doing so, make sure you check the box that asks to reveal non-indexed and hidden files. For me, the folder SecuROM came up, but the actual malformed files that you have to delete specifically using administrator command were not within that folder. I found mine in C:\Users\<Your Administrator Name>\AppData\Roaming\SecuROM\UserData. Afterward, I ran administrator command and managed to finally delete the stupid files. Then I went back to my Roaming folder and deleted the empty SecuROM/UserData directories and then deleted the crap from my registry. Only after all of that was it finally gone.