i can't open a file when i go -file - open - at the bottom of the screen i get - "Enter name of drawing to open (name of last drawing opened):" ctrl+o does not work also. i have exited, turned off the computer, reinstalled autocad but have not been succesfull so far. i'm running autocad 2002 on win 98. most of the pull down commands are greyed out and most of the icons won't work either. any ideas?