Yeah, they are actually pretty good.
So far, the miniseries that Avatar has put out heavily tie into the show and even tells you where the story takes place in the show continuity.
I recently got into the show about 6 months back. My mom has all the episodes on tape so I've been watching from Season 1, etc.
Found out there were comics not too long ago and got a bunch of them.
If you really like the show you should enjoy the comics just as much. The comics are easy to get a hold of too. All you have to do is go to avatarpress.com and you can pretty much buy all the comics they've ever printed of Stargate.
I know that one book is about Aris Boch, the bounty hunter. I haven't read that one yet.