Here's what I would recommend to do (I did this before for my Laptop). Assuming your HD is still alive, try to get your hands on a same product Dell (your IT dept probably has one, or use one of a co-worker).

Place your HD into the new Dell, install VMware Converter on your Laptop. This will let you create an exact image of your HD and creates a VM.
Run the VM on your Macbook.

This will work, most probably even without having to reactivate Windows. Couple of things you may want to check before running the VM on the Mac:
- change the memory allocation so it fits your Mac
- try and uninstall any unnecessary software from your VM, to safe on space

Now if you can not get your hands on a same product Dell, you can also create a VM image from your HD drive, if you can connect it to another box. VMware Converter is a great tool for that.

Good luck! ^