How to convert this VB code to C# code?

[SH Lee]

Hello,
I have the following code:

Dim prs As CDO.Person
Dim mbx As CDOEXM.IMailboxStore

Set prs = new CDO.Person
...
...
Set mbx = prs
mbx.CreateMailBox (...)
...
...
...

Could anyone tell me how to write in C#?
set mbx = prs make me confused