How to download file from rapidshare while useing proxy

We are working in offices and as usual BOSS (who think i am the king) access deny to the rapidshare site. but as usual we are father of boss and we use proxy to open such good sites (hahah). ultra surf is really very good proxy which can be use directly without installing (its one of my favorite proxy software). so when we try to download any file through such a proxy software it mostly show either "This ip is already downloading file" or "You have reached the download limit". this is because like us more then 80% people of industry uses same proxy server.
To resolve this problem.
-run proxy (like Ultra surf)
-go to rapid share search your file
-then click on file link.
-select free user.
now it will show you error message here that "you have reached the download limit" or your ip are already downloading another file.
- now stop your proxy (not close this page)
- click on refresh (plez do not press enter on address bar or click on go)
- now u will see that countdown got start and u will get ur desired file