External Monitor, iBook, and SwitchResX

I recently got a 19" external monitor for my ibook this Christmas. The screen image is blurred and stretched. I called both the monitor company and apple, but neither one was helpful.
I saw some discussions about SwitchResX. I downloaded it and have been tinkering with it, but am very confused. Can anyone help me?
ibook g4   Mac OS X (10.3.9)  

The best connection is DisplayPort.  DP 1 and 2 are no different.  DVI is also a digital connection and high quality.  VGA is fine for most people but is not able to display some of the high end resolutions.
You can only use one connection in each of the numbered connection blocks.  For instance, you can use DP1 and DP2 at the same time.  You cannot use DP1 and DVI1 at the same time.  Nor can you use DP2 and DVI2 at the same time.

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