I've sent you an email regarding this your problem, did you receive it? Windows 7 itself is not a problem - I am using XTools Pro 6.1 with ArcGIS 9.3.1 on Windows 7. It installs and works without any problems.
Regards, Andrei
Other Data East products
With CarryMap you can make your ArcGIS project mobile.
TAB Reader - Data East's input to ArcGIS interoperability capabilities.
Well Tracking - tools for management of well drilling data in oil and gas producing companies.
Personal IMS - Internet map server for publishing ArcGIS maps in Internet / Intranet.
JokerClick - extension providing easy access to the most frequently used ArcGIS tools.
