RE: iSeries/AS/400 and .asp commands - Reprint as I didn't see it posted

Gang,

Anyone do .asp against DB2 on the iSeries?   I'm working on a set of
.asp programs that access the iSeries and I need to find a reference
manual or listing or something that shows me what all the possible
commands are.    If I have things like:

AS400File_rs.EOF 
     AS400File_rs.Close
      AS400File_rs 
      AS400Command 
     

What are all the other commands I can use?   I need a command that will
detect an IBMDA400 error where a Duplicate key attempt has been made
during an INSERT command and then "softly" display a screen that says
what the user is to do now rather than the harsh "The page cannot be
displayed" MS Windoz message with the error message for techies.   I can
create the "soft" screen but don't know how to "trap" the SQL0803 error
coming back from DB2.   I'd expect a command like "AS400File_rs.DupKey"
= "True" or something like that.

Thanks,

Dave 
Arizona