The site I'd normally send you to is gone. Drat.
www.dt375.com
Mobipocket Reader can be downloaded from
here. You want the one with for Arm CPUs. Also, you should try v4.9 before v4.8 because it supports a couple extra features. BTW, there is a free activation code for MobiReader: "JWNLMXVU". Without it some features will expire.
You can also have MSReader as well as Ereader. Here is a good source of (mostly) compatible software:
http://www.yetanotherhomepage.com/j7xx/j7xx.html
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