I posted a tread a little while ago concerning icons in the systray not appearing on system bootup. It was never any specific icons that weren't displaying - it was totally random. I also found out that logging off and logging back on ALWAYS displayed the icons that were supposed to be there. I still have this problem and a couple of the replies that I received recommended re-installing XP as a possible fix. Apparently, the same problem had happened to them and they fixed it by reinstallation of XP. I still think that it is a registry problem but have no idea where to start. I have therefore decided to do a re-installation of XP, but my CD is the original, ie, doesn't include SP1. What I'm asking is how do I compile an XP disk which includes the SP1 update? If anybody out there knows, I will need fairly detailed instructions how to do it. I also have the SP1 update as a 128MB file on a CD. I probably could reinstall with my original disk and then add the SP1 update, but thought it would be much more efficient to do the installation with the SP1 update.