How does one use WIN7 with Least Administrator Privileges

I recently upgraded to a system with WIN7.

How does one use WIN7 with Least Administrator Privileges while using programs as an Administrator to protect oneself when surfing the internet?

In WinXP there was a program "dropmyright.exe" that one could link in the "properties" box to have a program, such as a browser, run in a Least Adminstrative Rights mode, while a User was using an Adminstrator account.


How does one use this program with WIN7? Is it necessary?

What other ways can be used to protect oneself in WIN7 while using the internet?

This has been a bit confusing to understand with the new WIN7 operating system. It now allows one to designate programs not to run as an Administrator, but then it prompts you when you start a browser to ask "whether this program can make changes to system". If one answers "NO" then one cannot use Firefox etc.

What should I do? Any links that discuss this further are welcome.

Thank you.