I agree... take it to a shop
The buzzing of the frets is due to your inntonation being off. To test this try the following; (you might already know this)...
Tune one of your strings, let's say the Low E and plug your guitar into a tuner (perferably a chromatic tuner). Now check each fret and each note to see if it registers flat or sharp (i.e. does the third fret show an in-tune 'g'). Also, check the 12th fret on the octave - does it hold 'E' just like when you hit it open? If most your notes are sharp or flat your intonation is off and needs to be adjusted. Also, how low is the action on the bridge (as in when your guitar is in tune do the strings feel really loose or tight? Is it way too easy to bend?) Usually with lower action the strings will at some point hit the frets (especially if you use heavy gauged strings, but the stock gibsons will never be more than 9s-10s)
But I agree...take it to your local ax-mechanic
I take my guitars to a tech before any major show or before every recording session. If you use it a good fair amount, I say it's good to do it every 3 months or so... shouldn't cost more then $35. And a good tech will ask you what kinda music you play/ sound you are going for and make suggestions. He/she will also clean your axe like it's brand new and keep all your switches, truss rod, bridge saddles, fret board, all in tack... your guitar will thank you and you will thank the music man...