error message

Dear friends,
Gongratulations for your site; I think it’ll provide considerable assistance to all novice users, just like me. To the point: every time I run my OS (i.e. Windows 95) I get a message saying: “X:drive Co. Can not load Vxd: can not continue”. This message appears in 3-4 differnt windows and halts all procedures, till I press the “OK” button. Very annoying, isn’t it? If u have any clue about it please let me know. Thanks in advance,
Canaris