How can i change the psp iso file to cso?

I've got a psp Iso file which is 600mb and i want to know what happens if i change it to cso, because i heard that the size halves or something and can someone tell me how i can change it to cso.
Can someone please help me with this?
Thanks

if you go to psphacks.com you can find not only that application but a whole schlew of others as well. and any other help topics you may need for future reference

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Originally posted 2008-11-25 20:34:02. Republished by Blog Post Promoter

PSP ISO (Help & Guide)

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