That can get reaaaaally expensive.
http://www.microcenter.com/product/437033/Ballistix_Sport_32GB_Kit_4_x_8GB_DDR4-2400_Quad_Channel_Desktop_Memory
Yeah, that is expensive. Not all computers cost near so much to upgrade. SkyDancer mentioned his computer having 2GB of RAM. If it isn’t already maxed out, maybe it could be upgraded to 4MB; that would not cost much. Always consult the manual for specs. I buy RAM on eBay for much than the retail prices you would have to pay at the retail stores.