[SOLVED]Urgent Question: Installation Combine Ops By Sprocket and DVD

Okay I hope this could be the right place and I posted this reply on one official sticky.

So this is a URGENT Repost

I just bought ARMA 2 from sprocket and installed it [1.05]

But I used to got OA standalone so I re-installed it

Now I have the directory installed

C:\Program Files (x86)\Bohemia Interactive\ARMA 2

and my ARMA 2 OA installation DVD prompt me to install into

C:\Program Files (x86)\Bohemia Interactive\ARMA 2 Operation Arrowhead

So how should I change to make it into Combine Ops automactically?

I need reply ASAP

EDIT:

I tried to apply patch 1.07 it says ERROR: ArmA 2 Not installed or installation corrupted

I can play ARMA 2 alone now and why does it say corrupted

[still trying to figure out how to install it into CO]

so should I change the ARMA 2 OA installation Directory to

C:\Program Files (x86)\Bohemia Interactive\ARMA 2

or

Leave it as

C:\Program Files (x86)\Bohemia Interactive\ARMA 2 Operation Arrowhead

or something else?

so should I change the ARMA 2 OA installation Directory to

C:\Program Files (x86)\Bohemia Interactive\ARMA 2

Changing the install directory of ARMA2:OA to where your ARMA 2 is fine an should make it combined.

SOLVED

Dwarden Helped me alot

Thanks Dwarden!

Used regedit.exe to edit HKLM\SOFTWARE\Wow6432Node\Bohemia Interactive Studio\ArmA 2

Coz there is one REGISTRY "Main" is missing that causes me unable to patch ARMA 2 to 1.07