Parasit, as far as I know, there is no way for you to upgrade to 250MB yourself, you will just have to wait until hotmail decide is time for us to get more storage.
Hotmail didn't actually say how long will it take for them to complete all the upgrades, but chances are we have to wait for months before it is completed. Some people say the more active and older your account is, the more chances for you to get it upgraded...but who knows, that might or might not be the case. We just have to be patient.
So...I am sorry to tell you, but you can't do anything but wait.
You can find more accurate information here:
http://www.bigblueball.com/forums/to...mail,stora ge
S.-