1.Download the modded (edited) files like faces, kits, rosters, updated fixtures ect...
2.Be sure to have winzip or winrar (winrar is usually the best) to be able to extract files from the .zip or .rar archive.
3.There are usually only 2 places where you need to extract/place/install the downloaded modded files to:
**Rugby08**
*The folder(s) like rugby08.ros(roster folder) and rugby08.pro(profile folder) goes to this location:
C:\Documents and Settings\Username\My Documents\EA SPORTS Rugby 08
*All other file(s) like
.big(faces & kits),
.fsh(kitbacks, other game graphics),
.rdf(edited roster for world league)
.xml(edited game files) and
.rsg(edited fixtures) goes to this location:
C:\Program Files\EA Sports\EA SPORTS Rugby 08