Welcome aboard. No need to worry, much like the internet and the world in general, just be a nice dude and you'll never have to worry about being banned.
Bad ping is no problem - my ping is 160ish on 762, hslan, and most of the populated European servers, and many players do less intense stuff like arty and repair duties with ping upwards of 200-250 with no problem. However, there are servers in Russia and South America you can go on where you might have better ping, and if your ping is bad on European servers there's a good chance your ping will be decent on the WaW public server. We play every Thursday and Friday night (including right now as I type this), so just go to the server browser when you start FH2 and join the WaW FH2.45 #1 bfewaw.com server and play every Thursday and Friday night at 8pm EST!