Guys,
I have tried a couple codes from Google for this but without success.
Is there any one who can help me with this.

Sheet1--->A1 is drop down list with:
All
FIN
RET
Oth

Now, I would like to create VBA code and when I select "All" to unhide ALL SHEETS then.
If I select FIN, I would like to see "FIN" and to hide RET and Oth.
Else, if I select RET, Would like to hide FIN and Oth and so on.

Ideas?

Thank you in advance.