Here's Freezing Fun:
http://www.mediafire.com/view/?n2aq5os8f3cd624
I also have tried Nautilus Chase.
I used a very inaccurate method (OK it's not very inaccurate), but here are the general steps.
1. I played through the game with VBA re-recording, while recording a 'movie', with invincibility (Game Genie) so I can go wherever I want (or can) without worrying about getting hurt, and losing a life)
2. I then turned the sprites/objects off, so only the actual level is viewable, and then played the movie, while outputting the movie as an AVI
3. I used VirtualDub to export each frame separately
4. I used Screenshot Autostitcher 0.7 (created by Maxim, of SMS Power, maybe you've heard of him?)
With Nautilus Chase, the AVI was split up into 2 files, so I have to use Movie Maker to 'make' one file, which was WMV. Which VirtualDub didn't support, so I then had to convert it to AVI.
And... as I'm typing this, it's currently exporting the AVI to images, of each frame, of which there are over 29,000 since it took 13 minutes to reach every possible part of the stage I could get to.