Jeff,
To add to what Daniel said, in Win98 setting up your DSN (which is like a pointer to a DB file on your system) is relatively straightforward - you need to go to the Control Panel and then open up the ODBC Data Sources icon, and then follow the instructions (fairly simple for Access - perhaps not so simple for say SQLServer). I don't imagine setting up a DSN in Windows 2000 is terribly different.
As Daniel said, using the Sun JDBC:ODBC bridge is a fairly temporary measure - it is a type I JDBC driver, and as I understand it will not work over the internet. So, if you are publishing your Access DB on the web, you will need a commercial driver. I have tried Type III drivers from the following sources (type III drivers are also like the Sun JDBC:ODBC bridge but more sophisticated):
http://www.easysoft.com/ http://www.j-netdirect.com Both of these work nicely with MS Access in my hands, but you can also view a more complete selection of drivers from the Sun site.
Cheers
Alan Watts