its a pdf txt Palmdoc DJVU CHM and HTML reader
it is not mine but it is an important and useful program for you and i now you'll like it
Warning: It works not all pdfs and you should have cfw (costum firmware) in your psp
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Step 1: The Program
here is the program
Step 2: Adding Book
insert your memory stick to computer and look the photos or
put your pdfs there