[idi banashapan]

even if you get to be a local admin on the machine, it will always be part of the work domain, which may cause issues in the future, especially if there are a number of group policies set on the machine and you are not confident in GP management on the machine. to remove the machine from the domain, it will need to be attached to it, and you'll then also need credentials of an account that has permissions to remove the machine.

imo, reformat is the best option to completely remove anything the company may have done in one easy, relatively quick step. as wayfair said, there should be a serial for XP on the underside of the machone. being company (or ex-company) it will likely be XP professional. get yourself an OEM copy of that and away you go (provided the serial on the underside is for OEM - usually this is the case as the machine will have been supplied by the manufacturer with an OS on to start with). get the drivers off the net, job done. will take you no more than a couple of hours to have it rebuilt to your own specifications!

the office app that is on there will likely be a VL copy, so you are not actually authorised to use it if you don't work for the company anyway. you could always contact the company and ask about their licensing for products, but if you were allowed to use it, they should have supplied you with the code.... dowload 'Open Office'. it's free and does a great job for it!