>> I have a droplist with three items (account type) and depending on which option is selected in the drop list I need to use a different select screen for another field (account number) as their are 3 possible source tables for the same number, depending on type.
Set the URL for the lookup to be a session variable. ie instead of
'browseAccounts' use p_web.GetSessionValue('lookupAccounts')
Then when the drop list changes change the value in LookupAccounts AND remember to "reset" the Account Number form field.
>> Also I need to make validation on entry and display the correct description. I assume I can just say send new value to server on the drop list and the correct value for account type is stored in the session queue for me to use.