Is tere a way to

You can up grade from 98 to xp. As far as more speed & memory that comes from a few more components than just upgrading memory. It matters on the limits of what you already have. A larger hard drive & more memory definitly boost things up but your cpu's limits will determine the actual hardware/software upgrades your system can benifit from. You'll have to get the specs on maximums for your model. If you can tell us what you have now it would help to determine a better answer than guessing.