Thanks again for the help.
Finally I found the solution to make AltDVB work with more than
one satellite with my Sat card. Installing properly the Visual
C++ 2008 redistributable vcredist_x86 has done the trick so
it can work with the alternative driver/library by CrazyCat.
But it still can not tune a secondary sat with the main AltX
library and my card because apparently its DiseqC is not
supported yet. My card is a DVBSky S952 Dual DVB-S-S2 PCIe.
Hopefully this is implemented soon.
I just wanted to thank you all again for your help and post
the solution here just in case someone may need it.
Now I have a small problem with the CrazyCat library, which
is image breakup once in a while, but I've been given a
solution which I will try later, and hopefully it works.