Yer prollem is prolly more serious than this, it seems like... but, for what it's worth...
The tilde key ( (~) the key right above yer Tab key) *should* both close and expand yer text buffer.
Hope it helps.
<edit>
Oh yah wot easymo said...
The tilde key only enlarges and shrinks the buffer (3 lines of text verses 16+ lines of text). You can also physically drag that text window anywhere you want with yer mouse.
[This message has been edited by Nash (edited 05-02-2001).]