Both analog and digital TV cards are not supported by Microsoft Windows Sever 2008,
because the BDA components are removed by Microsoft.
Please refer to the shahed26's posts to add those BDA components by yourself:
   BDA R2 (TV Card support for Server 2008 R2)
   BDA (TV Tuner) support for Server 2008 x86 and x64/R2 DISCONTINUED
   Hauppauge UK Forum -Support for Windows Server 2008 - How To