Zoostorm Freedom 10-270 upgrade?

I'm looking to upgrade my Zoostorm Freedom 10-270 so that it's a little (a lot) more powerful. I want to upgrade, mainly, the processor, RAM and graphics card; what is the best I can get for my netbook, and would I need to upgrade anything else too?

I've listed some of the specs and a website with more specs.
- Intel Atom 1.6GHz processor
- has a Mobile Intel(R) 945 Express Chipset Family
- 1Gb of RAM
- has 250Mb of available graphics memory
- http://www.zoostorm.com/Products/92-zoostorm-3389-9201-156-hd-laptop.aspx

Any and all advice is welcome, because I'm at a total loss with where to go.

Many Thanks.

You can only upgrade the RAM. Everything else is soldered.