I have 2 problems I use DOS (no way round it ) + 98SE.
prob 1 =screen size of postcard. prob 2 \ wont work, if you use # it produces \ on screen but rest of key board correct any Ideas please

Is this a new problem? Were things working OK previously? Any new hardware and or software?

You may need to reload your graphics driver.

Are you sure that the language options for your keyboard are correct?

As well as answering jephree's questions,,,,

Do you mean you are using the MSDOS 7.10a from 98SE as raw dos?

Is the screen problem in raw dos, booted to dos via the Windows 98 Start Up Menu - Command Prompt only, or a dos window launched from 98?