Adovbs.inc

what is the error message below. but i was found this "adovbs.inc" at the same folder with check_user.asp. beside that mind to explain to me, what is virtual="/adovbs.inc"? it use for wat?

Error Type:
Active Server Pages, ASP 0126 (0x80004005)
The include file '/adovbs.inc' was not found.
/management/check_user.asp, line 3

Browser Type:
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)

coding:

line 3. <!-- #include virtual="/adovbs.inc" -->