Ayuda por favor

[darksitoo]

Miren tengo este codigo en visual basic...

Código vb:

Option Explicit On
Public Class Form1
    Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim server As String
        server = "foro"
    End Sub
 
    Private Sub OpenFile(ByVal sURL As String)
        Dim nRetVal As Long
        ShellExecute(nRetVal, "open", sURL, "", "", 1)
    End Sub
 
    Private Sub sFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sFile.Click
        OpenFile("http://" + server + ".com")
    End Sub
End Class
 

lo que pasa es en la linea "OpenFile("http://" + server + ".com")" no se como hacer para poder meter la variable dentro de ese parentesis x.x ya he intentado con [server] y $server

gracias!