One can attach the vbs file to a test plan folder by clicking on attach button on a test plan folder. This can be done on the client machine through the IE browser.
Then we can go in QTP, and go to Tools_>TD Connection and connect to the TD project.
then you can associate the vbs file stored in TD to the QTP script by going in Test->Settings->Resources and click on + sign to associate a library file then click on … and you will test plan tree, and then find the vbs file in test plan tree
Select the attachment type to *.*.
So now u can create a blank test Plan, Called library and attach all ur vbs files, and use them for all other scripts.