There are four icon types with which I tend to have a lot of problems (in order): ZIP, PDF, TIF and RAR. The problem I have with these is that even if a package author has included icons for these types of files, about half the time those file type icons still don't skin on my computer (ZIP and TIF tend to display the package author's default icon, while PDF and RAR files tend to display the default icons for those two programs). Rebuild Icon Cache, Repair Icon Images, and Repair Shell Icons do not help in these cases. I'll grant you I don't have the most powerful CPU or video card (a 1.8 GHz Pentium 4 and a 64MB ATI Radeon 7000), but they are perfectly adequate for my purposes as I am not a gamer, and the drivers and BIOS are up to date (as they are for all my hardware). I have enough RAM to choke a goat (1.5 GB). Anyone have any ideas on why it is always those four file types that are affected?