Emachines 3090 keyboard

im having so much trouble right now i want to find out if my laptop will support another ram but can find out how to remove the keyboard i seriously need help. i was wondering if anyone would know about the above system and could tell me how to remove the keyboard, or if they know whether it will support another ram under the keyboard??? i currently have 1gb running hom premium. i started with 512mb, 40gb and home basic. i now have 120gb, 1gb and home premium. 1gb is still not enough, i am getting 2gb ram but it would be good to keep my 1gb and stick that in as well. does anyone know also where i can get the cheapest 250gb 2.5 sata hard drive??? i have found one for £72 i would like to know if i can get it cheaper??

thank you so much if you can help