How to easily create a direct membership collection using another collection

We can very easily create a static collection by using a makecoll.exe, but this tool does not have an option to  add more systems to an existing collection. It might take lot time and require manual efforts to add a large list of systems to an existing static collection(direct membership).  The following tip might help you quickly add list of systems to an already existing collection....

1) Right click on the collection on which you like to add a list of systems that are available in another collection(source collection). Select Properties. 
2) Click on Membership Rules tab and click Next.
3) Click on Computer icon to start the Create Direct Membership Rule Wizard.
4) In the Search Resources wizard. 
    Select Resource Class: System Resources
    Select Atribute Name: Netbios Name
    in Value: type '%'

5) Click on next. 

6) In the "Collection Limiting" wizard, in the search in this collection: type the your source collection name and click next. 

7) select the required computers and click Next. 

8) Follow the wizard to complete it.