Hello guys, it's me again. Yesterday (Sunday) I went to a Apple store to enquire about the Apple with normal RAM compatibility issues. As mentioned in my previous post, this sales guys was telling me that I may risk frying my iBook's harddisk if I were to use non-apple specific ram. And yesterday, this guy in another apple centre told me that it's not advisable to use non-apple specific ram. Although he didn't say the consequences will be. Anyway, I plan to stick to y'all advice and outsorce from my PC supplier. Now my question is: 1. What are the specification of the non-apple specific rams y'all are using? 2. I've visited www.crucial.com, I think it's cheaper that those apple ram, but still expensive for my taste (I'm on a tight budget). I can get a SDRAM PC133 256Mb at around $50 USD. 3. What are the specifics that I should lookout for if I'm getting 3rd party RAM? Is it just any SDRAM PC133 or should I think about 'parities'? Thanks you everybody, it's been a tremendous help from this forum... Thank you!