When I type my e-mails, I can only type five lines down before the top line starts to disappear, and the more lines I type the more the upper lines hide themselves,
its a nuisance because I have to scroll up to see what I have typed, how can I extend my typing and viewing area.
That depends on what service you're using and whether you're using an offline client like Outlook or Thunderbird (which I doubt, because offline clients display a large compose area usually) or a webmail interface.
Hmm… Sorry, Mel. I have no idea on that one. My hotmail account’s compose screen is fine and I don’t see any draggable area at the bottom corner. Maybe Ray and others would have some ideas.