The error with Access is the common "updateable query" error. You need to assign read/write permissions on the database file and folder, for the anonymous internet user.
I bet the MySQL install is being done on Linux machine, without Sun ONE ASP installed. Without it Snitz won't be able to run. Why don't you use the web server you're using with the Access install and the MySQL Db in the Linux server (presuming you're using a MySQL DB in the same Linux server you're using for the second install)?