taken from : http://labnol.blogspot.com/2005/11/rapidshare-tricks-megaupload-yousendit.html

Unlimited Rapidshare Downloads sans Rapidshare Premium Account Generator

Rapidshare is the default destination for all sort of program files, ebooks, movies and audio clips. But the problem is that either you get a Rapidshare Premium Account or will face restrictions on your downloading limit.Generally people who are on dial-up or have a dynamic IP address assigned by their ISP, they'll just turn off and restart their modems to change their IP address to fool rapidshare and resume downloading. More Rapidshare TricksThe other trick to cheat rapidshare without getting a rapidshare premium account involves some sort of dos commands:]

1. Clear your browser cookies.

2. Open the command prompt (Start - Run - cmd.exe)

3. Run the following simple commands:

ipconfig /flushdns ipconfig /release ipconfig /renew

4. Type exit to close the DOS window.

Restart the rapidshare download job.Now Megaupload is even smarter and impose a limit of simulataneous users based on your country. To bypass the Megaupload limit, type the download uRL in a translate website and work on from there
Does it work??