Couple of corrections
This is undoubtedly Unicode. Bytes per letter: 2. Double your size. (STILL doesn't make up enough space though.)
@ @ALL THE TROLLERS:
1) Some of us HAVE developed operating systems. Some of us may not have developed OSes, but we've developed applications that talk to the OS. And just a few of us might happen to know what we're talking about. Windows has a lot of ancient code and ancient backward-compat modes that mean that it really is a pest to work on.
2) 1GB free? That's actually plenty.... as long as you don't have a bloated OS. When I install a new eComStation system, I'll usually partition the disk with 1GB _total_ for the OS, including its default page file (which I move subsequently, but it fits happily into that gig). Usually, there's a whole lot of free space on that volume. I'm looking at a system here where the boot partition is on a dedicated 4GB drive; and there's 3.5GB free.
3) It's not a waste of energy to keep complaining about Windows. Apart from being highly satisfying, word sometimes gets back to the people who decide what OS you'll buy. Windows? Didn't my dev team give me fifty good reasons for not using it? Okay, let's get something else.
56MB is appalling for adding words to the dictionary.