The difference between the two is dynamic and static. If slic4 works for you stay with it, it is the dynamic one.
ok sorry, wasnt on the forum and there's so many posts, if u miss 1 day, u miss 10 pages the certificat is named asus.xrm-ms u have to open cmd in admin mode to install it command is : SLMGR.VBS -ilc C:\ASUS.XRM-MS (if u put the certif in C:\ ) command to install key is : SLMGR.VBS -ipk <OEM_PRODUCT_KEY> try to find this file : Vista Oem Activation Tool Kit 0.5 Beta lot of certificats and logos or just dl the paradox vista emulator, u'll find what u want and help files in it.