Hi there,
That website is showing the tweaks which can be made to your connection, and how itâ₠¬ÃƒÂ¢Ã¢â‚¬Å¾Ã‚¢s currently performing. The RWIN is what you need to pay attention to; as if this is incorrectly set in relation to your connection then you could experience poor performance, in both speed and latency.
A good way to judge your advertised kbits/sec is to run the test on ADSL Guide, on the analysis page it will show you the connection speed in kbits/sec. Then fill in the box with the information you get, and reanalyse your connection.
When it states RWIN Recommendations on the broadband tweak page, simply download the program †˜DRTCPâà ¢â€šÂ¬Ã¢â€Š¾Ãƒâ€šÃ‚¢ which is available as a link underneath the RWIN settings.
When you download that, just enter a figure between the two recommend values that the website has given you into the first empty box in DRTCP. Make sure that the correct network adapter is selected from the drop down box, then save the settings and reboot your system, to make 100% sure that the new settings take effect.
Hope that helps,