I'm in NZ, which means my internet is capped at 5GB, which is not funny.
I notice on my Windows 7 that even after disabling automatic update (don't worry, I flick it back on during my off peak hours) it still constantly downloads about 1kb per second, which starts to stack up.
You may consider getting a cheap dial-up connection if you can get one for like USD/mo., and using that for overnight Windows Updates and such.
It occurs mostly because of BITS(Background Intelligent Transfer Service) Stop this service.
Make your browsers start-up page also home page by typing in the following in the browsers address bar about:blank this gives instant start-up of your browser.
Sending photo attachment with Emails, Go to the folder with your photos in it.This will shrink the photos to one tenth in size by stripping out colours and density.The photos will still arrive on the Email with good appearance. Just a small thing you can try when your dataridge is used up and you are on slower time.One thing you can do is make a list of what you want to download, then only download when you have used your data.Takes much much longer that the faster time but by downloading on slow time you preserve dataidge for fast Internet-ing.
Holding down the CTRL key click on the photos you want.