Don't laugh.... I recently bought an Emachines t1842. It has 128MB of PC2100 DDR SDRAM. I was wondering if SDRAM can be swapped out for RDRAM and if it is worth the cost, or if I should just install more SDRAM. The system says it's expandable up to 2GB. It has a 1.8GB Celeron, and a 40 GB HD. I mainly use it for looking at the internet and downloading music. If anybody would be so kind as to answer this computer novices questions it would be greatly appreciated. Thanks, Mike.