Hi there. Just installed NOD32 AV 3.0 again and during install it said that some of the following applications could interfere with NOD, namely F-Secure. Ok - so here's what I did do before installing NOD. I was trialling FS AV 2008 - uninstalled through add/remove programs and rebooted. Deleted all remaining traces of FS (ie. any program folders left behind, any specific 'fs' files relating to F-Secure (most were text documents), uninstalled 2 FS drivers left behind under 'non plug and play drivers) and any remaining FS reg entries. Finally, I also used the FS uninstall tool as well. So as far as I'm concerned I've removed everything I possibly can. Did a reboot and checked all the above again to make sure nothing was left behind. So, after getting the message above from NOD during install, I did a search in the registry for any other f-secure entries. The ones I found relate to legacy drivers (for example, F-Secure HIPS was one of these). Now my problem is that when I try to delete these entries it's giving me accessed denied. I'm the only user running with admin privaleges and UAC is off (using Vista 32-bit by the way). I've done a search around the web and seen ppl talking about changing permissions to enable me to delete these entries but it seems I've got the required privaleges. Someone mentioned that you need to use 'system privaleges' to do this but not sure how. Anyone else had any F-Secure products installed before they put NOD on? Any messages like the one I got above? Would be really nice to remove these reg entries so any help/advice would be much appreciated. By the way, I chose to ignore the alert and installed anyway and is running very well.