Have you not read what we have said? You can not increase the speed, all you can do, is drop money into it that could be spent on a faster PC.
If you really want to drop some serious money on that little thing, buy an SSD, which will cost about the cost of a new netbook, and upgrade your ram to 2GB.
It supports a MAXIMUM of 2GB, for a single slot. One slot only. Processor can not be upgraded AFAIK, and it can come with an SSD from the factory. Look, if you wanted processing power, you should not have gone for an atom based machine. They are meant for travel, email, surfing the internet. They are not meant for heavy multi-tasking and gaming.