follow instrucions and viola!
The only reason anyone will use their two gigs is so they don't ever have to delete anything again. Ever. 5 years from now you still won't have filled that 2 gig via 'normal usage'.
Now.... 2 gig of arbitrary storage? That's a whole different ballpark. But this is definately not that. Your probablly limited to a 5 meg attachment, making your effective maximum data region 5 meg. Not 2 gig.
As it is your just helping MS. If you want a big email Yahoo has 100 meg free, which for Joe Schmoe consumer, is plenty.
If you want more, ask for a Gmail invite.
But don't, whatever you do, support MS under the false assumption your hurting them, and invite others to do the same. That's just outright irresponsible.