Zeeshan -
I am pretty sure your admin is going to have to cough up some cash for a third party component to do the trick.
I think this company ASP Smart
http://www.aspsmart.com/aspSmartSecurity/
might have what you are looking for.
We've used stuff from them in the past and they work great with our enterprise level apps.
Another drawn out approach if you are using a higher-end DBMS would be to ponder putting image files (binary) or text files and storing them in the database. This is an interesting approach and will probably take some reworking with your companies current application model but it works too.
I say try to hunt down a good third party tool
Cheers,
Christian