let's keep the rom development topic in here. Here is my romkitchen, from kaiserkitchen 0.3. There is no flash utility, but you can use customruu for that.
The included rom is a base for localisation, or customisation. Click on first step (prepare), make your changes, then click on step 2 (cook). You have a Signed_RUU ready for flashing.
In my experience, it is best to delete the RUU_Signed before creating a new one
Also, the custom ruu will not flash the new rom if you do not change the folder between each flashing on vista. I use a name identation (folder1 then folder2, etc...)
Happy cooking. Please use this to help finding stuff about drivers
Warning: you cannot add or remove from sys folder without doing a greloc. DO it before doing anything. Notge the value, then relaunch it when you added or removed something. Put back previous value then click on go!