Starting Over

I have been working with this particilar Shopping Cart for 30 days. Trying to get the Shipping to work.

I am thinking maybe some of the PowerStore 3 Files were corrupted during installation and I need to delete all of them and start over.

I have downloaded a fresh copy of PowerStore 3 and unzipped it into a folder.

Then I downloaded all of the "Known Issures" fixes and unzipped them to the folder. This includes the one that was posted a day ago for shipping. (It did not fix my problem with shipping)

Here is my question, if I delete the current PowerStore 3 files from the Server and start over. What will this delete? How much of the work I have already done will be lost?

I know the products will remain in the MySQL Database, but what I am not sure of is how to link the fresh copy of PowerStore 3 to the current MYSQL Database since this Wizard will automatically create new tables.

I cannot find any information on how to link PowerStore 3 to an already existing Database.

However, I did find the instructions on moving from PowerStore 2 to PowerStore 3. Will these instructions work for what I am about to do above?

I really need answers soon.