|60% memory usage with 1 GB RAM on Windows 7 does not sound unusual.|
There is a common misconception that Windows boots using some fixed amount of memory and applications must fight over whatever is left. Not true, not even close. Memory usage in Windows is highly dynamic. After bootup system processes are using a large amount of memory because there is currently no better use for it. When you open applications Windows will reassign memory usage as necessary. I have seen this happen many times.
1 GB RAM is minimum for Windows 7.That means it will provide generally acceptable performance with a limited workload. It will not provide optimum performance.
And I expect that not even 1 GB will be available to Windows. Since this is an eMachines laptop I expect that some portion of that 1GB is being used for video display and unavailable to Windows.