A customer connects to our screensurfer server  but are not 
able to download the Function keys plug-in , becouse they 
are behind a proxy. We can't make our customer modify the 
proxy.

How best might the customer get to be able to use the 
function keys, please?  

I am expecting information as to which browser the customer 
is using and whether email or ftp might be used for small 
files.  If this is the best approach, please could you let 
us know which files, and where they need to be installed?

One approach for IE--

First, open Tools/Internet Options:"Temporary Internet 
Files"--click on "Settings" Button, then "View Objects" 
button--this will show you where your temporary internet 
files are being stored.

Access using browser: 

http://support.screensurfer.com/docs/sskeys.cab

This will either prompt to download, or open WinZip if 
installed...

Unzip the files SSKeys.dll and SSkeys.inf to the folder 
identified in the first step--on windows/2000 this 
is "c:\winnt\downloaded program files"

In a command-line window, cd to the folder, then run:

regsvr32 sskeys.dll

As-in:
c:\>cd "\winnt\downloaded program files" <enter>
c:\winnt\downloaded program files>regsvr32 sskeys.dll