Program Load problem

Hi,

Usually I just read through these forums however I have come across a issue that doesn't appear to be covered.

Before I start I should let you know Im not at all good with comps and can only do basics.

I have installed a game (Hearts of Iron 3). This works fine. However when I install the expansion (Semper Fi) and try to load it, I get the following error:

The program can't start because d3dx9_40.dll is missing from your computer. Try reinstalling the program to fix the problem.

Like the error message suggested, I went ahead and reinstalled, twice actually, but again I get this error.

This error is weird because before I reinstalled windows the games worked fine.

Extra information :
1 )Before I reinstalled windows, when the games worked fine, I also had other newer games such as Battlefield Bad Company 2, Starcraft e.t.c
2) After reinstallign windows I only have Starcraft and Company Of Heroes.
3) Operating system I am using is Windows 7 professional 64 bit. (This did not come with my laptop, I had to purchase it seperately).

Hi severedsolo,

Im at university atm so will give it a try as soon as I get home. Thank you for taking the time to answer. I will give a reply post later stating wether the method is successful.

Regards, Geeza.

I have downloaded the link (40 mins it took for 40mb, What's going on here?) and installed the file. I can confirm it has worked.

Thanks a lot severedsolo, yor help is really appreciated!

Regards, geeza.