I would set the ODBC up as a System DSN, We access our excel ODBC over a network, and although I'm not positive,
I think it has to be set up as a System DSN to be available to more than 1 machine. Can Anyone comment?
Also, with system DSN's I've found that if you don't have "Show System Tables" checked, when you add new fields to your excel file, they will not show up.
"Show System Tables" can be found in File > Options > Database Tab >
Andy