Are there any resources avalable for these?

thanks

What kind or resources are you looking for?

MAPI can be handled using the CDO reference Library.

See: Send Email using CDO

I'm looking for any coding which can help to dial telephone numbers and share between applications such as send email.

thanks.

Here are some TAPI VB code examples that (with a little work) will work in VBA:

http://www.vbip.com/miscellaneous/tapi-01.asp
http://tapifaq.pennypacker.org/tapifaq3.html

thanks. i'll look into it.