Can someone help me with the combination of steam/retail?

[dbx125]

Hi my question is how do I combine all the games if my combination is like this.

Arma 2 retail
Arma 2 Reinforcements retail

Operation Arrowhead Steam.

Also do I need to patch Arma 2 and Reinforcements and if so what are the latest patches?

Thanks.

[NeuroFunker]

You could copy Arrowhead from steam, over Arma 2 retail folder, using regedit.exe to change arrowheads registry path to arma 2 retail path, then install reinforcements + apply 1.60 patch just in case. Maybe someone knows more simple way.
If you wan't to know what to edit in registry, ask me in pm.

[dbx125]

Wow that sounds difficult.

Is it not possible for me to install reinforcements and when it asks for the file to install it into i go to:

"computer/programme files (x86)/Steam/Steamapps/Operation Arrowhead?"

---------- Post added at 18:32 ---------- Previous post was at 18:25 ----------

I managed to get Combined operations to work without doing anything. I lauched Operation Arrowhead from Steam and it had added Arma 2 and all the campaign missions so all I need is a way to add retail Reinforcements to steam arrowhead.