Uninstalling some MS-Windows features (e.g. Media Player), the MDAC component needed by Captools/net may become uninstalled or broken.  The following repair should resolve this situation:

How to Repair MDAC 2.81 under Windows XP with SP2

1. Open the folder C:\Windows\inf and locate the file mdac.inf.
Note: Your Windows folder could be named differently, e.g. C:\WinXP

2. Right-click the file mdac.inf and click Install.

3. When prompted for a location, point to :\Windows\servicepackfiles\i386

4. When prompted for the file handler.reg, either point to C:\Program files\Common files\System\msadc, or put the Windows XP CD in your CD-ROM drive. (you may receive file not found error(s), click cancel and the continue with the installation)

This reinstalls / repairs MDAC 2.81 under Windows XP SP2.