As long as you have enough room above the Socket, I would highly recommend the Thermaltake Volcano 9 (about £10 online) which has an 80mm variable speed fan that is very quiet for office use in its lowest rpm rate and it has the required copper insert that XP chips specify. I recently built an XP 2200+ system with it and it runs that chip @ 55 degrees under full benchmarking load in 3D Mark 2001 SE with the lowest fan speed.
I would strongly recommend a Geforce4 MX as you will not need gaming performance and most of these cards do not have a fan on the heatsink and are therefore quiet for the office. You might also consider Enermax PSUs which can be run in silent mode.
4.77MHz to 4.0GHz in 10 years. Imagine the space year 2020