If the product you're selling has multiple downloads (ie. bonus products, or simply multiple files for the one product), then you can use DLGuard's bonus/multiple item feature to display all the files on the one download screen.
To do this, you first need to add your main product.
In DLGuard click the Add button and add your product as you normally would. Set the "URL Of Product File" to the first file in your group of files you're offering. Add the rest of the details as per normal, and then Save the product.
Next you need to add your bonus products, or the rest of the files.
To add bonus products, or multiple files, in DLGuard click the Add button, and add the Product Name, a logo URL if you wish to use one, the URL of the product file and the hours to have the download availible. Set the Product Type to "Other".
Repeat this with the rest of the files you want to add.
Once you've finished adding your multiple/bonus products, go to the Home screen on DLGuard. Next to each of your products you will see a product number. Write these product numbers down.
Click the Edit link next to your Main Product that you first added (the one with the Payment Processing info set up), and scroll to about half way down the screen. You will see a box marked "Bonus Product Downloads".
Type each of your bonus product numbers into this box, seperate by a comma. Eg. 2,3,4,5
If you wish to have your extra files displays the same as the first file (with it's logo and the download button beneath it), then tick the "Display Bonus Products as Icons". If you don't tick this box then the extra files will be displayed in a table.
Click Save.
Now when people buy your main product, all your files will be displayed on the same download screen, all of them protected.