Notebook true and false memory problem

My laptop is the Fujitsu S2110, the memory is too small, I would like to add a 1G memory, is the generation, DDR333, have a business to 320, life-long warranty, free of charge to clean up my fans and re-system, because I Is a computer layman, you ask, he said life is not a warranty, then it should be really?

“ Halo memory can be added OK on the boot …1G memory on the 130 – 150 $ …
Why re-system system has no problem …ah …

you encounter the JS…1G memory, 130 – 150 $ quiet ah you want to buy your flow is also! DDR generation of people to talk about ah man not to do so since the sentimental oh 1G to 320 of DDR333? On! Were slaughtered? Said above 1G memory on the 130 – 150 more than the estimated $ said, to see what brand, I bought a few days ago, took only 100, is a modern