Attachment Size limit on emails Webaccess on IIS

Webaccess 8.02 on IIS 2003 - When trying to send an message with an attachment, I attach the file, hit send and then receive the message "The page at http://(host) says:" "'This message cannot be sent because it is larger than the allowed size". It seems to only happen on messages about 2mb. I tried using a recommendation i another post about changing the setting in IIS, but with no joy...Has anyone else seen this problem and how do I fix it???? Seems related to running on IIS as it works fine under webaccess on SLES or Netware.

Thanks,
Mark Currie