Installing ram. what is involved in putting the 128 mb ram chip in the notebook. i have no

Question

what is involved in putting the 128 mb ram chip in the notebook. i have no problems doing this with a pc. never done it on a laptop

i have a 2520cdt i brought 2nd hand but it dosnt go is there a manual i can download to see what its missing? i just got ripped off big time!!!! I'm pi.........ed off......