Can I create Virtual Directory for an entire server?

Of course you can use a UNC -
http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/cd02642c-8389-4563-9cd2-bae8a516c722.mspx?mfr=true

thank you leew but I know that I can use UNC in Virtual Directories. My question was if the Virtual Directory can just point to server name and not specific directory in that server? like this \\Server1

I'm not sure what you're trying to accomplish?  Do you have another web site you are trying to point to?  If so, then you can do that, but not via UNC, you'd redirect via URL.  If URL won't work (the machine is otherwise not publicly available, then NO you cannot redirect via UNC without providing a share name at the least.

Is it possible or not?

I could not understand what do you mean by URL won't work ?

I want to make all folders in that server(not just specific folder) is available to the webserver, how can I do that? any thoughts?

Points: 250 -> 500

You have to realize that if you make ALL folders available via IIS, then your system security folders are vulnerable which opens up the vulnerability of your entire network.

Jeff
TechSoEasy

We have a web based software that share files and each user have a UNC path, to make these UNC paths reachable from the internet we have to make them available by create a virtual directory for them, the problem is that each of our customer has a different users' structure, to solve this problem we write a script that create virtual directory for each user's path but this is unfortunatly is not practical way since some customers may have thousands of users and creating thousands of virtual directories is not a good idea.
I thought here that we can create one virtual directory that points to the root of the server that have the users' paths so that we can make each user path is avalable to the internet.