I have an older Toshiba laptop,P205-S7806. I want to upgrade the memory but was told it came with 2gb and that's all it can hold,it is a 32bit. I am not computer savvy by no means so please any help,make it simple. I was told I could change it from the 32bit to 64bit,is this really easy and then can I use more memory..thanks for any help you give me..