Is there a special way to install 4in1's on XP, becuase I always check my cpu to agp/other system drivers, and they are always the same, ho do i know the 4in1's are even installing, right now the drivers i have are all: Version 5.1.2600.0 (which is the one that comes with XP, right?)

The drivers for those things wont change, the only things that these 4in1's update in XP is the .inf and sometimes the IDE drivers, as well as installing the PDE and SBLive! Patches if required.