Hi again!
I responded to your "Emulator" thread post with a link for Cool Reader. I didn't look, but does the Amazon Appstore have it? The easiest thing to do for apps is to Google the name with "apk" and usually you will find a way to download. Also, somewhere in this forum (probably in the "Android Apps" department) is a list of websites people use for getting apps without going through Google Market. If you know the website for the publisher of the app you want, I would start there.

The Amazon Appstore has not been around long, but it is a great resource. Also, the enTourage store ("Store" app on your PE) has a lot of good free apps that will work on your eDGe. They do have a Crossword app, but I haven't tried it.
Your rtf to epub books are taking WAY too long to load. Not sure why. Have you tried Calibre for converting? If it will do what you want you can easily transfer files from your Calibre library on your PC to your storage and/or Library on your PE. That's what I do. I'm sure there are other solutions out there if you don't like Calibre.
Too bad Amazon didn't give you a micro SD card! Good try!

If you think you'll need extra storage you have options: microSD card, USB stick, cloud storage, LAN storage -- that's all I can think of at the moment.
When I first got my PE I had a list of things I wanted to try, and hopefully do, with it. I am still discovering new things and have not checked off every item on my list. Some things surprise me that I didn't think it would/could do, and some surprise me that it can't.
Why, just out of curiosity, do you need an "emulator"? What does it do? (I thought it was obvious from the name -- it emulates something

-- but now I'm actually curious.)