Secrets to PC connections?

Its getting really sad. I see people with full bandwith bars. Nice, smexy green bars. UNABLE TO CONNECT. I see people with 2 or 3 bars. Lagless play, able to connect. My question is what type of sorcery must I abid by? This is PC vanilla. I use windows 7 but I have everything set up for getting past ESET. Windows firewall causes more problems when I shut it off so I have it set to allow any ports and such. Doing this with Windows firewall fixed pretty much every other game. Street fighter IV seems like it has other magic to preform. Anyone know?