I tried on my computer with excel2003, but got an error. I think it's the Citadel4 ODBC driver's issue.
Please create a new Citadel4 database, log some data, and try to import to Excel. If it works, your current database has something wrong. but if it doesn't work either, I believe the ODBC driver is not good enough.
If it's the odbc driver's issue, I suggest you to upgrade Lookout, since Lookout 6.x uses Citadel 5, which is much better.
Unfortunately we don't provide a upgrade for Citadel only.
Ryan Shi
National Instruments