If your institution or ISP blocks access to Rapidshare, free Firefox addon "Download Rapidshare @ Office" can be the solution you are looking for, the handy little addon changes Rapidshare links (rs*.rapidshare.com) to IP's fooling the proxy server into allowing the access, you just need to paste all your Rapidshare links into the addon toolbar and it takes care of everything else including managing the wait-times restrictions, the whole process is fully automatic and very easy, you can also use this to download multiple files as a Rapidshare free user easily.