2Gb of RAM is quite low so it's not all that surprising 60% is being used. On all the machines I've used (with 4Gb usually), Win 7 uses around 2.5Gb. On my desktop with 8Gb, it usually uses ~3.5Gb.
Windows scales it's usage depending on the available RAM, and the less you have, the harder it is to manage it.
Press Ctrl+Shift+Escape to bring up your Task Manager, and take a look under Processes. There may be a non-system program that's using extra RAM that you could close, but this is very unlikely to be your issue.
RAM is very cheap; I'd recommend bringing it up to 4Gb.
EDIT: Although, like the others mentioned, you should be fine since 2Gb is the min recommended. If you're not experiencing random slow-downs, then it's not an issue.