Is explorer running then? If it is, you can see "explorer.exer" in the list on the "processes" tab of the task manager. Also, if explorer is running, hitting WinButton+R should show the "Run" dialog.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)