I do have a 2GB that will be available in a week or two when I scrap an old machine ... so that may be one way.
It will run 64bit and I have a license so no issues but without 8GB probably not worth changing.
A new PC would be cheapest! Although this one is only used for video call/conferences, webinars, conf calls and not much else. I am trying it on a Webinar at present and it is running hot with memory up at near 90% and disc access levels peak if I try it for other apps at the same time. CPU 50% a lot of which is system related - Firefox and the video link are sub20%
M H C
taurus excreta cerebrum vincit