Small Clariffication needed in MFC program

Hello Friends,
I am sekhar. I am a New bie in MFC field. When i am trying to write a program related to mouse clicks i am getting two interesting errors:
syntax error : missing ';' before identifier 'WPARAM'
c:\program files\microsoft visual studio\vc98\include\windef.h(170) : fatal error unexpected end of file found.

Can any one guide me, to proceed further.

Have a Great Days ahead
Sekhar

Hello Sekhar,
Can u Send me tha snap shot of the code which u have actually written

Regards
Ranjit