Disclaimer: see in other page
First, install some mirrored-hebrew fonts on your system. A bit more details are again, on the 'seeing page.
:guifont=Netextmo_Mirr:h14In order to see the font. Then, for keyboard mapping, newer versions of ViM, support the command
:help hkmapto read some details around it if you wish. One problem of the 'internal' hebrew support, is that some mode would automaticly assume R-to-Left uppon hebrew mapping. Therefore you might need the commands: 'norevins' , 'hkmap' (like the Israeli kbdmap) and 'hkmapp' (some sort of visual kbd map)
:so (somedir)/heb.il.shift.vimthen, '^_' switches modes, esp the mode-swtiching isn't the cleanest, if you can impove it, please do. The same maps are posted at www.vim.org, but with R-to-Left as a default.
The scheme I'm using, is using specific font names, and high-MSB on 8bit chars. The later I like (thought I'd rather be using UTF-8 or something, but I'm too lazy to set that up, I've very ignorant about all the typesetting standarts, and I just wanted something that works), but the specific font thingy I don't like at all. Please mail me if you know some 'right' scheme of how to link a list of alternative fonts or whatever, to an 'X-user-mirr-heb' tag or whatever.