>I have a small program, which has 1 form and 4 reports. The reports are crystal reports. I have a button in the form "Email all reports", when the user click this,all 4 reports are procesed and send as attachment via email.
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>Is it possible to run this every 2nd wednesday,without any 3rd party scheduler and without user intervention.


Not exactly. You could use the Windows Scheduler to trigger it but if it has an interface, it will not be automatic as somebody would have to be present to push the buttons on the form.

It would be better if it was rewritten to run unattended (i.e. no interface), and just do its thing and quit until triggered again.