missing build-in modme drivers on xp pro

[Chris]

under Control Panel, Phone and Modem I tried to add a modem. When click Next
I got the Standard Modem Types under Manufacturer, on the right under Models
I have:

Communications cable between two computers
Parallel cable between two computers

It should list other models such as

Standard 33600 bps Modem
Standard 56000 bps Modem

I need 33.6. How to add those models back?

thanks.

 

[Bob I]

Somebody remove the mdmgen.inf file from C:\windows\inf folder?