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Try going into your admin/system/blocks, find the blocks you want to display on the custom module page. Make sure you highlight the custom module page in the drop down menu along with the other pages you want it to display on. Then click submit. Assuming you allready have the blocks set to visible "Yes". Even if it says visible "Yes" you must tell it what pages to be viewed on. Just don't yell at it...
Edited: I just realized you didn't say what I understood it to say. I don't know that you can display blocks within a mypage type content module. I guess there is a way but would require more knowledge in php than I have. Sorry.
Quest