Increasing Broadband Speeds Safely

[code] just came out with a new package called Roadrunner Broadband Extreme ($10 extra). The claimed speeds are 30GB down and 5GB up. I have a friend in another area of town who is getting these speeds consistently, although i will admit he lives in a much more "technologically advanced" area where there are several big technology businesses like IBM. I just had the service installed last week, and have even had the cable techs to the house, but i am not even close to getting what i paid for.On average a normal day i would test at between 14-17GB down and maybe 2.2 up (using Time Warner's speed test, on tests from places like Speakeasy the speeds show much lower).So the question after the long winded description is this. Is there any program i can use that may be able to safely tweak my system and get closer to the speeds i should be getting? I know i may never reach 30 down and 5 up, but if i could at least be in the 20's down and maybe 3.5-4 up.