GVim Portable Download
The GVim Portable allows you to run GVim from a removable drive whose letter changes as you move it to another computer. The program can be entirely self-contained on the drive and then used on any Microsoft Windows computer.
There are two different flavours of GVim Portable:
Full: This contains the the vim runtime environment and the gvim package as they are provided on www.vim.org
LightWeight: This version is much smaller but "doc", "spell", "vimtutor" and a few other things got ripped off.