An easy way to compile an ODL/IDL source to a typelib for
use in VB6 is to create a folder like "Make TLib" and copy
these Windows SDK files into it:

C1.dll
CL.exe
MIDL.exe
MSPDB60.dll  <--- The "60" part varies by SDK version.
OAIDL.idl
OBJIDL.idl
UNKNWN.idl
WTYPES.idl

Then add this batch file that allows you to drag and drop
your ODL/IDL sourec file icon onto it to do the compile:

    RunMidl.cmd, has just one line in it:

        midl.exe /mktyplib203 %1 >log.txt

Output, errors, etc. will be written to log.txt for easy
review.

Your ODL/IDL source compiles to a .TLB file of the same
name as the source, written to this same folder.
