I've never been told this, and never knew about it before, so I assume it is not well known. So here I am to share my knowledge! Unfortunately, I believe this is for Windows users only. Anyhow...
Ever wanted a easier way to preview the .MIP files than from a viewer? Well, I've found a way!
However, Windows Vista & 7 support is not mentioned. A user of those, please let me know how it works out for you okay?
You'll need: http://sourceforge.net/projects/sagethumbs/ *Funnily enough, this borrow's XnView's library, which is the program I was using before.
1) Install it
2) Open Up The Options (you should be able to find it in Start Menu search) and add "mip" to the customs area.
3) Press Ok and wait for it to finish its stuff. Reboot of explorer.exe may be required.
You should now be able to view all MIP files directly from your windows browser like so. Enjoy!