Tony its so slow it can barely load pictures on the net mate, i think his spec does have something to do with this and its just bogging down.
Ok a new hdd or more ram may speed things up but at the end of the day he has a very old celeron, i think its worth upgrading the whole thing for a few hundred then he wont have to worry about it for 4-5 years, and he will have some comeback if anything goes wrong with that dell
If you dont have the cash for a new pc then by all means get another gig or two of ram in there