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Hi I installed dragon age 2 through playonlinux and when i click on it it asks me to run the programs and and administrator and says I'm a guest? how do I run it as an administrator?

This problem is caused by EA authentification system, it do not work with wine. So you have to "disable" this security.

It also cut you off the possibility of using DLCs...unless you copy already activated DLCs folder from a windows install.

Since european laws are crystal clear about that, we cannot help you with this, you will have to find yourself the required files. (Like Yoda said : "Use google Luke")