GPS on my Laptop

Hi, I have recently bought an Latitude E6510 from Dell.com. I want to add it GPS capability to get GPS compatibility and act as an anti-theft mechanism.

On bios it does talk about an anti-theft chip that I can only enable (or disable) once. I didn't mess with it until I had a better understanding of what this chip really does.

I want to be able to track my laptop (somehow) in case of theft. So a USB device that could easily be yanked out would be out of the question I think. I am unsure which internal ports are available for my use with such a thing but the EC slot is unused (again this is something easier to yank out). Since its GPS I am unsure if internal devices would work well.

Another problem is I have moved to Europe so I am not sure how well those GPRS/GPS combo cards such as Dell Wireless™ DW5540 built-in mobile broadband card for AT&T (HSPA) with GPS would work here. Since it is probably locked for AT&T I wager it wouldn't work well at all...