Enable Windows server 2008 R2 to ask for credential rether than showing permission error

We have a windows server 2008 R2 machine and this server is acting as a domain controller as well. And all of our client machines are using Windows 7 professional and connected to this domain.

There is one shared folder named “softwares”  on one of our server machine within the domain wherein we have put all our licensed softwares and have shared this folder with only IT administrators(for security purpose).

Now, whenever we connect to this folder in any of the client machines using \\appliationserver\softwares we are getting the error message as shown below

“ you do not have permission to access \\applicationserver\softwares. Contact your network administrator to request access”

Now we want the client machines to ask for user name and password instead of showing this error msg, so that our IT administrator can enter their name user name and password and access it on client machine.

Please note that we can map this folder using the option “ connect using different credential” but we don’t want to map it. We want to access it from “RUN” only. 

Any help will be appreciated. 

Thanks in advance.

Farhan Ziya