Okay so what i have found is an easier way to access more than one mod version of the game... so ill use 2 folders as examples both of which are fa'atau's MUP mod and the SANZAR mod
1. Make a copy of the original directory of Rugby 08 and rename it, Make sure that both directories have a rugby08.exe in each folder
eg. copy EA SPORTS Rugby 08 in C:\Program Files\EA SPORTS\ and rename the original EA SPORTS Rugby 08 MUP and the copy EA SPORTS Rugby 08 SANZAR
2. Un-rar the MUP files into the EA SPORTS Rugby 08 MUP folder and the SANZAR Patch files into the EA SPORTS Rugby 08 SANZAR folder
3. Now that they both are set up right click on the rugby08.exe in EA SPORTS Rugby 08 MUP folder and click send to Desktop(Create Shortcut) and rename it MUP Rugby 08
4. Right click on rugby08.exe in EA SPORTS Rugby 08 SANZAR folder and create a shortcut on the desktop also and rename it SANZAR Rugby 08
So now you should have 2 Shortcuts on your Desktop...
one which is MUP Rugby 08, Destination should be "C:\Program Files\EA SPORTS\EA SPORTS Rugby 08 MUP\Rugby08.exe"
and the other SANZAR Rugby 08, Target Location "C:\Program Files\EA SPORTS\EA SPORTS Rugby 08 SANZAR\Rugby08.exe"
So you could just make more like that creating more shortcuts....
Thats what worked for me so i hope this helps everyone out....