Ubercart

To sell digital products do the following :
1) set up a directory on your server where you will store your digital files. Example "Product_Downloads" or something . . . and put all of
your .rar files in there
2) Log into your site and go to Administer/Store Administration and there should be a place under "Status Messages" where it's asking you for the
name of that directory. (You may have to click on a link)
3) Type the directory name into the field and hit save.
4) If its done right it will display a message stating "The product download directory has been set" or something to that effect.
5) Once that is set up then you can start creating products and linking them up to the corresponding files from that directory that you just linked
up. When you create a product, fill out all of the information i.e. SKU#, Name and all of that and then at the bottom click "Save and Continue".
After that, once it has been saved, at the top of the page click on the "features" tab. There you should see an "Add" button next to the
words "Product Download" or something like that. Click on that "Add" button. Now it's asking you for an SKU number, type in the SKU number of
the product you just created. Below that there is a text box field asking you for the product download file name. Start typing in the name of
the corresponding ditital file that you put into the directory on your server. It should automatically find it and you should be able to click
on it and have it populate that field with the name of the digital file. Then all you have to do is hit save and you are set. You have just
created a product that is linked to a digital download so when your customer purchases the product, they should get an email containing the file
once the order is "completed".

Im not sure how to do the file upload thing yet but I sell tattoo artwork on my sute and thats how I set up my digital products. I use the Acquia slate theme with some customized artwork.

Take care and hope that helps!

Dano