Muneer,
In the OnCurrent event of the form, put the folowing code:
If me.genderfieldname = "Female" Then
me.cmdbuttonname.enabled = True
Else me.cmdbuttonname.enabled = False
End If
This will turn the button on and off as you cycle through the records.
You'll also want to put the same code in the AfterUpdate event of the gender field so that when the record is first created, the button will be correct when that field is first populated.
Regards,
Mike