Boot check

To all: I have installed 6.4 and recently updated it to 7 as a proxy server. When I installed the machine at school I am almost certain it had 128MB RAM but recently it has become very sluggish and I did a mem check and it now has 64MB. We have a network manager that is an ex-A level student and tech support is run by upper school students and things do tend to go walkies on occassion. Is there any record of what was the original machine specs when I loaded 6.4 several months ago? It is more for peace of mind than anything else. I assume there is a text file somewhere? Paul