Which still doesn't answer the question of have you actually TRIED running whatever apps you think will not run on 7, or are you just assuming that they won't?
And good luck with that search. Like I said a ways back, XP x64 had very poor driver support because it wasn't intended for widespread distribution. Odds are, if they'd managed to get Vista out the door reasonably on time, XP x64 probably would have never been born. But the fact that it was a little known and little used OS, coupled with the fact that we've had not only Vista, and Windows 7, but Windows 7 SP1 come out means that you're looking at probably over 4 years on. The odds of being able to find any bit of hardware still supported that far out would be a challenge, let alone finding one for sale, that will work with your particular laptop, which also happens to have an XP x64 driver. Needle in a haystack doesn't quite begin to describe that scenario.
Every way you turn on this one you're going to find one insurmountable obstacle after another. And even if you somehow manage to find this elusive network card, which probably doesn't even exist, you have the issue of exposing yourself to a significantly higher amount of malware on account of XP x64 being an orphaned OS. Letting that thing loose on the Internet would be very ill advised.
And I'm not really sure what the problem is running an OS inside an OS. Pretty much every CPU made in the last 3-4 years, probably longer, has virtualization tech built right into it for exactly this sort of purpose.
We've tried the whole soft approach, but obviously it's going to take a bit more. What you're trying to do is never going to work, and it would be stupid to waste your time trying to make it work. Just try the bloody programs on 7, and I'll bet you a shiny nickel that they work just fine. No need for XP Mode or anything else. Install, run, the end. You probably have a better chance of being struck by lightning after surviving a plane crash while going to collect your lottery winnings that you won without ever even playing the lottery than you do getting XP x64 to work like you want. Give it up. Stop wasting your time, and that of anyone foolish enough to try and help you in the future.