Most of them already are, and YES, you can add them as add-ons in ONE session along with everything else you want to do with nLite. WMP11 is different. You will need this http://www.boooggy.org/slipstreamer/ . I may be mistaken, but I think you have to do this before you start nLite. I suggest you slipstream SP3 into XP (with nLite or not), save it as an .iso and use that as a base for consequent work with nLite. Cheers Thanks mate. What do you mean by ready made add-ons? Can you not just insert the .exe file for the program you wish to be installed as part of the slipstream into the "Hotfixes, Add-Ons and Update packs" section of nLite when you're creating your slipstream? (see att) I have had a look at winaddons as well as the RyanVM forums but there are quite a lot of things that they don't have add-ons for like Agent Newsreader.