Read Registry values if WinSCP is installed

Hi,
I am developing an MS Access 2010 app in VBA
I am trying to check if WinSCP is installed on a machine.
As WinSCP.tlb is a reference to my project,

I am checking via VBA, if the file "%windir%\system32\winscp.tlb"
(or "%windir%\system64\winscp.tlb") exists

If not, I am registering COM assembly via code, with RegAsm.exe using:
%WINDIR%\Microsoft.NET\Framework\<version>\RegAsm.exe WinSCPnet.dll /codebase /tlb

Is it possible to read WinSCP registry key and value for that?

I can read registry keys and values in VBA

Do you want to test, if WinSCP is installed or registered?
If registered, IMHO the best test, is to try to instantiate the WinSCP.Session class.