Did you found an error wile opening Orkut?It makes a folder named heap41a in the C:\ drive with attributes S (System file) and H (Hidden file).
If your pc is infected by this virus then just boot it in safe mode,goto cmd prompt and at C:\> type attrib -S -H heap41a to make this folder visible and then just delete this folder.
Now use a registry cleaner to delete the registry keys made by this
Easy Method to delete the virus.
open task manager>process tab>there if you find svchost.exe before your user name (remember also system will use svchost.exe don’t end that) just give end process for that then go to run and type C://heap41a and delete all files of that folder..