1) Drag and drop the signature to your desktop.

Note: If your signature has the dimensions at the bottom. Then you need to click on the signature so that it opens a new page and then drag and drop it onto your desktop.

2) Go to your User CP and click on edit signature in the bottom left corner.



3) Now click on the browse button and select the signature you wish to attach.



4) Now press 'Upload'



5) Once your signature is uploaded, press 'Insert Signature Picture'



6) And to center the signature, press the center text icon.



7) Now just press 'Save Signature'



And now you're done!

-Chuck