I would appreciate some help/advice on a computer memory upgrade.
Sorry this is so long and involved/detailed?
My current computer is an 7-8 year old HP running a Pentium 4. This computer is currently using a dial-up connection, as I am at a loss for available cash at the moment and will be for awhile yet. For what I use it for (mostly just web surfing), it's been okay. However, about a year or so ago I noticed I was occasionally getting warnings that I was about to exceed available memory. I'm guessing that that isn't the REAL/only problem, but instead there is the possibility of a virus that has taken up residence. But either way, perhaps 4 MB of RAM isn't enough anymore. If so, a check of the motherboard shows slots for what I believe is 4 memory cards, but that there are currently only 2 "in residence". This is somewhat confirmed by a sticker that is on the side of each of the 2 cards: 256 MB DDR PC2700U, 333MHZ. IF, if, I go ahead and update/add to the RAM, I'm guessing that 333MHZ memory is no longer available. WHY? I have noticed in recent sale flyers for places like Best Buy and COMP USA that they don't have this speed of memory on sale, but the cheapest memory cards on sale are always faster.
Questions are:
1.) Can I successfully add more memory?
2.) To double the memory, can I still add 2 more cards like those already present, or are they close to being/ already obsolete?
3.) Will the cost of doubling memory be better spent on a partial downpayment on a newer pc?

