Question bout upgrading my RAM

Im planning on upgrading my RAM space by buying a 1GB.I opened my computer and it only has 2 slots to put the RAM card in, and both are filled. My question is if i took out one of them and then put the brand new 1GB in its place, would any files or anything get erased? Thank You

Thank you for answering my question, i just wasnt 100% sure if it did store data or not. Cuz i heard one thing and then i heard that it did or didnt so i jsut wanted to clarify this.

But i went to best buy and put in my computer n model/brand n it gave me all the RAM cards that were capatible with my PC. so yea tyvm

http://bestbuy.upgradebase.com/results.asp?SC41X2B0BF0AAD

that link is the cards that are compatible with my PC....if u wanna look n comment on them

Best Buy is so incredibly overpriced when it comes to RAM... Also, replacing both sockets would be better as it will operate in dual channel. Captain__Tripps

OK well ima get them of of newegg.com since those are outrageously cheap. But how do ik which ones will work for mine? i tried there lil search for ur brand andf model but they didnt have my model. so how do i find which one to buy?

It's a desktop PC eMachine brand and model= T5062