Before I show you my problem once again(see "How to register mscomct2.com" for the beginning), Thanks for Randall J Weers' reply.

May, you don't understand my problem.
My problem is:
+ There are some people use my application (Their computer install only Win98/XP ... OS, Access97 to run my Application, not install any more)
+ I have a pakage of my Application to setup on their computer.
So, I need only file mscomct2.ocx to register for my application after that application installed on computer (this computer is only installed Win98/XP..., Access97; not installed VisualStudio or any Access97 version after.
So, if you know to register mscomct2.ocx successfully with Win98/XP ... OS; without installing VisualStudio, any Access97 version after. Could help me ?

Althought, I installed my application succesfully, then register mscomct2.ocx successfully too. But when i run the applicaction, one of Date Time Picker is showed as empty rectangular. So I can't use my Date Time Picker.

Any one help me?