Hi, I was often asked what's the difference of these three kinds of mods and some people are mixing up the methods. -Static mod (old mod method): The address of SLIC (address at physical memory, RAM) is fixed. At this method you have to modify the bios without the call of SLIC FIRST. After you have flashed it once, you have to find the address of SLIC (where is it mapped to) with e.g. HwDirect. After that you have to reverse the address you have found and modify the bios again (insert call). Now you can flash it again and SLIC will appear at AcpiScope, Vista activates. This method works only with a special amount of installed RAM. (e.g. mod is flashed on a machine with 1 GByte Ram installed, it will crash on a machine with e.g. 512 MByte Ram installed) This method is obsolete and nobody of us modders are using it this time. This method is of course never used by official OEM bios. -Dynamic mod: The address of SLIC is allocated by bios. The address is varying, it fits on every machine (no matter how much RAM is installed). The ISA method is dynamic. This is the method which is used by official OEM bios. (But therefore they don't use a separate ISA module). -Super static method. The address of SLIC is also fixed, but it is at a area which is accessible at every machine, no matter how much RAM is installed (FFF00000h area or 000FF200h) This method is never used by official OEM bios.