How to make my compaq evo n610c run smoother?

Question

328 mb memory, and a 30gb hard drive, and pentium 4 1.8ghz. its fast at times, but sometimes it lags. i take care of it and constatntly remove unwanted files. what should be the next step to making it run real fast. add memory harddrive space, or wat

Answer 1

get the same brand and laitency memory and the same sizes preferably like the originalthen defrag the hard drive