I see on a new thread someone was asking about Onspeed well I've updated this thread to give my experience. I was having problems with my broadband and needed my PC for a job and got Onspeed to improve speed with dialup (before buying a new PC). It definitely sped up my downloading. The speed increases are best for Text-based or Upstreaming (as much as 8 times) Graphics would be slower at about a speed increase of 1.61, which gives an average of about 3.81. Someone mentions about graphics quality above, well this can be changed in the settings menu. If you want quicker downloads, you can alter the Image Quality.
Now my broadband has been fixed and Onspeed improves speeds also. I now have 2 pcs, one old (smaller processor and smaller RAM & Onspeed) and one new (bigger processor & Memory). Cant see difference between performance of old, with Onspeed and new without BUT old pc with Onspeed is definitely quicker with Onspeed & broadband than Broadband without Onspeed. So if you have dialup, I would definitely recommend ONspeed. With IOL increasing speeds this weekend, you may not need it if you already have broadband - unless you have an old PC. Hope this is of help.