Regarding F4 help for Presentation server and application server

Hi All,

I have one functionality to achieve for my presentation and application server fields in my selection screen.

If i press F4 on Presentation server field it should take me to all the directories and i should be able to select upto directoty and it should fell in my field on sel-scree.

Ex: C:\TEMP\DATA\

If i press F4 on Application server field it should take me to all the directories and i should be able to select upto directoty and it should fell in my field on sel-scree.

Ex: /SAP/FI/INBOUND/

How this funtionality can be achieved.

Note: I will not select any file i would rather select directory and user will type in file name once Directory fells into the field.

Thanks in advance.

Thanks,

Deep.