So you want to play with Anti-Aliasing do you?
*NOTE: Several Reports that AMD/ATI cards are not playing well with this alteration. If you have issues with the game crashing after altering the .ini file, simply open it again and delete the "AntiAliasingLevel = X" line and save the .ini again.
Follow these simple steps and your game will look as smooth as the small Asian boys that I keep chained in my basement.
Open "Start Menu".
Click on "Computer".
Select your C: Drive.
Select the Win Username on which you will be playing SWTOR (in my case, Encarn).
Look for "AppData". It is hidden by default so you may need to manually type "\AppData" after your username.
If you have followed directions, you should see this window or something similar:
Now you will select "Local".
Look for the SWTOR folder. Click on it.
Now select "swtor".
You should then see this window:
Right click on "client_settings" and select EDIT from the menu.
You should then see this document:
You are going to now edit this document by adding the last line highlighted in red. You can adjust the variable based upon your PC's hardware. I chose 8 and it looks fantastic. Your options are most likely 2x, 4x, 8x, and 16x.
Remember to select "File" in the top left and "Save" the changes you have made to the document.
Launch the game and enjoy a jaggy-free gameplay experience.