if your talking about client only then install CC*** 2.2.1 onto your stb then c+p your c line details into /ect using ftp.
you need to do a good bit of reading up on your stb.
get yourself these files
VUcc 0.7 (to ftp into your box)
CC*** 2.2.1.ipk to intall onto your box using addon manager with remote(first ftp the file into /tmp)
you also need a connection to a server which we cant help you with but google is your friend with this and all the files you need. blackhole is a great image for your box and there are others like pli/vix.
if you want to set up your own system with your own card this is still possible but will require even more reading.
good luck,rgds