by vincent on Mon Jul 26, 2010 4:05 am
A really short explanation: Mint4win is the Mint-customized version of Wubi (Ubuntu). They allow you to install Ubuntu/Mint within Windows, as an added convenience for new Linux users wanting to make the switch but unable to comprehend the concept of partitioning their system. However, I personally don't recommend it as anything other than a stepping stone, reason being that Linux becomes nothing more than a program within Windows and if Windows goes down, so does your installation of Ubuntu/Mint...there are also other factors to consider, like the fact that installing Linux in a native Linux filesystem (ext2/3/4, reiserFS, brtfs, etc.) is more preferable than installing it in a Windows' NFTS partition, for example.
A Google search would've answered your question much more quickly though.

Debian Testing x64/LM9 Main x64/Windows 7 x64 - LG R580 laptop w/ Intel Core 2 Duo T6500 2.1 GHz, 4 GB DDR2 RAM, Nvidia Geforce G 105M, Ralink rt2860 802.11n, 300 GB WD HD 5400 rpm