Not possible. You can't put a folder of Firefox bookmarks on the desktop, and you can't access Firefox bookmarks without Firefox running.

This shows what can be done with a Firefox desktop shortcut as far as opening specific URL's in tabs and windows.
https://developer.mozilla.org/en/Command_Line_Options#-browser

that's great!, i have managed to create a script that will open specified sites in a shortcut bat file, my only problem is that after i open it, the current tab is set to the last one, i want it to select the first tab as the one to show, any way i can do that?

You can set the Home page to a folder and then select your Home page to open if you start Firefox.

• Tools > Options > General > Startup: Home page: "Use Bookmark"
• Tools > Options > General > Startup: "When Firefox Starts": "Show my home page"

i really don't want it to open every time i open Firefox, just when i open the bat i just made, i want it to set the current tab to the first one.