1) In your SWG directory find a .cfg file and copy it.
2) Paste that file into the folder, and it will say "copy of the file you have used.dfg file".
3) Rename that file to "user.cfg"
4) Right click and open it using Notepad
5) Delete ALL that is in there ,and type in:
[SwgClient]
allowMultipleInstances=true
Just copy and paste this above in it...... because it DONT WORK if you type wrong

...
then just wait for it to be fully loaded (or it doesnt work) hit alt+Shift (or something to go to your deskop) and open a new swg