As the title said, nLite supports Windows 2000, for example. I think it's possible to modify Windows 9x and NT 4.0 too.
98lite 98lite2 MElite the original h--p:-/-ww.98lite.net seems down i only find h--p:-/vetusware.com/manufacturer/LitePC.Com/?author=893 and the new official h--p:-/-ww.litepc.com/download.html
hmm, the only thing to modifies installation i can remember ar the MS RK (Kecorce Kit) for the diffrent os. but the RK does not realy modifies install files (like nLite). i think in the Stoneage of PC nowbody think about modifies install files. we ar all lucky to have a 286 and later (386 or 486) home pc and a hercules monocrom monitor. the little new animal so calld "mouse" was wonderful.