How do I link an external VBScript file to my ASP file?

Where should I put the code to link the VBScript file?

How do I call a routine that is found on my external VBScript file?

I used the code below to call the routine from the external VBScript file:

'MakeConn is the name of the routine
Call MakeConn(Con,DSNTemp)

Unfortunately, this error message appears:
Type Mismatch 'MakeConn'