Switch the resuolution to 640x480 & it will make a big difference. In XP it won't give you the option so you will have to go into Display Properties---Settings Tab, click Advanced button, click Adapter Tab and then select List All Modes button.
As for the cutting off of the outside edge of the display, if changing to 640x480 doesn't fix it you should be able to adjust the centering or the width of the screen in the TV controls (also in Display Properties).