Ok then have a look at my thread here: Planning a six foot tank (now considering a sump Oct 2012)
I know it seems kind of lame but this tank is still not set up yet. I'm currently waiting for the stand to be built, and my life has just been crazy busy. For the record, I think I'm just going to go with a canister. But you may get some ideas by looking through the thread. I was intrigued by the gl[censored][censored][censored][censored][censored][censored][censored]s website... they even have a video of how to drill the glass. In my opinion, drilling is likely safer (in terms of flooding) vs overflow boxes. Take that from someone who has never run a sump... but that's my belief, based on the reading I've done.
I know lots of people here run sumps... you can learn a lot by going through their threads. Wkndracer, jcardona, amongst others. jcardona has a youtube video that you can likely find. He uses a Beananimal design, which is meant to offer the best in terms of noise and safety. Although, it does require a bit of complexity.
If you go to youtube and search for uarajoey, you can look through some of his videos on sumps.
That should be a start for you. There are a lot of terms to be learned... herbie, durso, etc. I'd start with the gl[censored][censored][censored][censored][censored][censored][censored]s website and hopefully that will clear things up for you. My head was spinning for a few days, but it all became clearer after a while. HTH.