Really? How did you do it? I guess you get a program package, I didn't know I could block a particular channel!!! I can't believe the hours I've spent fussing at my children about Rug Rats when I could have pre-empted the discussion.
Having seen my cousin's kids watching Rugrats, I knew when my daughter was born that Nickelodeon was NOT acceptable in my house.
You have to set up a channel list, then deselect channels within that.
I suppose it varies for each receiver, but mine is an RCA. Under the main menu options you should be able to find it.
It's very helpful... I have 4 channel lists: "Family", then one for me, one for my wife, and one for our daughter.