Yes, You can do that. Since you own the .net it would give you a great place to setup the wordpress version of your site. I’m assuming you’re not getting any traffic to the .net domain name?

Create a new subdomain for the .net version of your in your cPanel, install wordpress and build your site.

You could also download a free desktop application called XAMPP that will install and run Apache, MySQL and PHP on your local computer. This maybe more than you want to do but it’s an option.

When you’re done and you’re site is all ready to go…

On the .com side, backup your entire BANS folder to your local desktop computer(as an archive) . Then, (still on the .com side) move BANS to a subdirectory called “/oldsite” or “/bans” or whatever name you like. Make sure you don’t link to it from anywhere. This will give you another backup on the server that you can still access it by going to this hidden directory. It will also help if things go terribly wrong and you need to recover quickly.

Once BANS is moved, Go to Fantastico and do a new install of WordPress on the .com root. Then simply move everything from the .net to the .com. Check out this post on moving WordPress.

Let me know if you run into any issues or have any questions.

Good luck!

Joe