In Web gui - Task - open app

Hi all, 

We have a web gui app. In this we have a Document.Pool. Here the user can upload/download files, and view all generated documents. 

Since we cannot use this as a ‘folder’ from copy/paste and such, we have created an app that logs in, and shows all files. 

I want a button in my web gui, that opens this app. 
I have found the task; windows command thingy, and this opens in windows gui my Paint. But not from web. 

So, can I use this windows command from web? And open my homemade file browser..