Installing BW

[Ray Dessert]

I have installed and played Dungeon Siege II. Now I want to install BW. Well nothing happens I just can't start the setup file in any way.
I bought the deluxe package that included Dungeon Siege II and BW.
Xp SP2, Pentium IV 2,66 Ghz, 370 HD, 768 RAM.

Can anybody help me?

Ok everybody, I found in the forum something that helped me out here.
"In your (original) DS2 game installation folder there should be another folder called 'dev' - normally a complatible version of that *.dll can be found there, just copy it next to DungeonSiege2.exe.
In many cases the addon should start then."

So thank you for reading my post, and now I'm gonna try to play BW. Wich me luck.