Outlook 2002 xp crashes

Need help, I been 3 days trying to solve problem! I have used scanpst, removed and reinstalled outlook 2002 xp but I have not been able to solve problem. When outlook opened, suddendly crashes with out giving any error report. Lately I can even open it as when I do, inmediatly crashes after opened.
I have sp3 installed, windowsxp 2002 uptodate, vaio vx 88p PIII 850 256 ram. Have 3 pst, one is 200 mb other 2 are 1.3 gb.
Thank for u support