Install the submoduels, and comment out this block in e $VIMRUNTIME/mswin.vim
(requires admin):
if has("gui")
" CTRL-F is the search dialog
noremap <C-F> :promptfind<CR>
inoremap <C-F> <C-\><C-O>:promptfind<CR>
cnoremap <C-F> <C-\><C-C>:promptfind<CR>
" CTRL-H is the replace dialog
noremap <C-H> :promptrepl<CR>
inoremap <C-H> <C-\><C-O>:promptrepl<CR>
cnoremap <C-H> <C-\><C-C>:promptrepl<CR>
endif