The half-screen display is clearly a Windows 2000/XP problem.

I’ve found the following instructions:

“Switch to Windowed mode by pressing <Alt><Enter> Right-click on the title bar of the window Select “Properties” from the menu On the “Layout” tab, set the Buffer and Screen Height settings to 25 Press “OK”

Select “Save properties for future windows with same title”

Press “OK”

Then you can switch back to full screen mode by pressing <Alt><Enter>”

 If that doesn’t work, try selecting not “Properties”, but an other option in the same menu that gives you an identical window (I have no idea how it’s named in English version, so just try all of them) and set Screen Height to 25.