hi
is there a way to convert isilo docs to a pc readable format like text,RTF or word
thanks

Yes there is. Get iSilo for Windows. It has a "Save as" function which allows you to specify a .txt file.

Cheers!

Is there a way to do it without buying more software?

I think you can use iSilo for Windows for a limited time for free (trial period). Other than that I don't know of any way to convert iSilo files back. This is the biggest drawback of a proprietary file format.