.net - For Each Obj As MyObject In MyArray - Is This Doable Without Implementing Anything

I'm using VS2008.Is the following OK to do the following VB.NET with a very simple class (see below)?

for each CurrentObject as MyObject in MyArray
'access current object
next

The "simple class":

Class MyObject
public I as integer
end class

I seem to remember that something about needing iEnumerable, but my compiler isn't complaining.