Computer memory is cheaper these days than it has been in a while (it seems that about $1/megabyte is the going rate). I added an additional 128MB to the existing 128MB on my IBM PC300/GL and it’s like having a brand new computer for $129. If you’re finding your computer sluggish, esp. if it’s because the disk is thrashing around like a washing machine a lot, you can’t go wrong by adding more memory. If you’re running Windows 95 or 98, and have more than one application open at a time as a matter of course, you really need 128MB+ to have a smooth experience.