What ever has happened the LCCU is no longer recommended using especially for Vista. I think it may still work for older equipment and OS's but I have found it now not needed for XP and 2000. But only a little over a year ago for these when I was running a 4000 system and a ICS to run my network.
Are still having speed problems? Judging from one of you last posts your download was 1015 Kbps and your upload was 108 Kbps. That is right in for a DW7000 Pro system. I have gotten as high as in the 1700's (Kbps) for downloads and maybe just over 200 for an upload at best. The top according to Hughes is 1000 down and 200 up. Lately for some reason my upload top scores are down a little.
And their are no real speed tweaks for the self hosted systems other than making your PC perform at its best, like keep programs running at minimum and a daily run of spyware or adware Apps, I use 2 to 4. Also clear temporary internet files and then when done run a test. I usually only test if I notice something not working right.
I also read this
If you have high speed at work and it's not Satellite you can't make a comparison for equality. They are totally different, total traveling distance and the size of the pipe. So if you still believe your having a problem post a couple of tests, not back to back but maybe on different days and we'll see if we can help, but it takes patience.