I just bought Lock on modern air combat. I know it's an older game, but being new to PC games, I thought it would be better. I installed it per Instructions. I have windows xp. When I insert the disk and try to play, I get a message saying that it has to close and it states that it is a "Pure Virtual Call". When i try to remove it, to reinstall it, I get a message that the Install Sheild won't work. Can you help me??

First time I have heard that one, try and post here http://forums.eagle.ru/forumdisplay.php?f=33 at Ed's site (the makers of lock on)