Hello Julie,
We no longer have the v3.0.x installation available.
To be sure, you do not have to have the v3.0.x CD to upgrade. You just need a copy of your v3.0 database, which has all of your data and tax lists in it. See the Product Info >> Upgrading from 2.x or 3.0 page on this site for full information. The upgrade process just takes a couple minutes.
Let me know how I can assist further or if you have any questions.
Jeff |