Cropping Favour

Hey guys,

I was wondering if someone out there with access to photoshop (as I am not one) might be able to take the background out of these logos and return them to me as PNG files with transparent backgrounds?
[LIST]
[]http://paul.sc/sas/logos/sas_logo.jpg
[
]http://paul.sc/sas/logos/towers_watson_logo.png
[/LIST]
Thank you soo much!