Trying to install Acrobat 9 Pro Windows - Serial nr. problem

I purchased Adobe adobe CS 5.0 Design Standard edition and Acrobat 9 Pro separate installers some years ago.

I have bought it as downloadable software from adobe licensing server, so I don't have physical cd or dvd.

Because my old machine crashed I am trying to install both packages again on clean win 7 machine.

I have my CS 5.0 and Acrobat 9.0 pro serials on Adobe Licensing server:

I can also download and install my CS 5.0 Design Standard edition with no problem.

But I don't have any Acrobat 9.0 Pro option to download.

I browsed your forum and it suggests this link:

Download Acrobat 8 and Acrobat 9

When I download Acrobat 9 Professional and try to install it, installer refuses to accept my serial nr. "Invalid serial Number" it says.

I searched little more:

I downloaded AcroPro90_efg.exe program, but when I read Creative Suite 5 Design Standard Read Me.pdf, it suggests that I extract and install

this installer: APRO0930_win_esd1_xxxx.exe

Could this be the problem, that I don't have the exact version of the Acrobat 9 Pro?

Can you help me please to install Acrobat 9 Pro.

Best regards