How to display all rows even if you dont enter a parameter

I have this SQL

SELECT     SupplierID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax, HomePage
FROM         Suppliers
WHERE     (Country = @Country)

... note, its not a SP

I want to display ALL rows if a user does not enter a @Country. Can someone please help me with this.

thanks