How do I change my prespective mouse settings in xdesign.

I have already written a post about this, the person that replied had a setting that I did not have, and I don't know how to fix my key binds for my mouse. for example, I don't want my mouse to select when I use left click. I want it to move my screen around, and the middle button on my mouse used to be pan, but now it's what my left click should do and to pan I have to click ctrl and I don't want to have to do all of that to do normal settings I used to have. Also, all of this happened after SolidWorks was having a malfunctioning and once it stopped all my settings were messed up and I don't know how to fix them because I started this a few weeks ago, please help me find out what the problem is. Thank you. 

Edu