Your options are pretty limited. Based on a quick search the max amount of RAM it supports is 4GB (2 sticks of 2GB DDR2 RAM). You can install a larger capacity hard drive or a SSD (solid state drive), but that is the limit of your upgrade.
You are better off saving up money for a new laptop. The following $350 laptop would be significant upgrade to what you currently have.
Your options are pretty limited. Based on a quick search the max amount of RAM it supports is 4GB (2 sticks of 2GB DDR2 RAM). You can install a larger capacity hard drive or a SSD (solid state drive), but that is the limit of your upgrade.
You are better off saving up money for a new laptop. The following $350 laptop would be significant upgrade to what you currently have.