alphanumeric random string generation in vb6

Dear All,
I jsut have this problem,

I've to develop an alphanumeric string of length 4, which may contain a-z, 0-9, and only @. like 12sd, @1fg, so on..

I've to generate a minimum of 50 characters at one click of create button, and have to display only when the display button is clicked , til lthen the strings have to be in clipboard ready to be pasted anywhere.

once I close the application or load it for the first time, the clipboard should contain the last data.

any idea guys

I am assuming you have the code to generate the strings.
After creating the strings , write to the clipboard

VB Code:

clipboard.settext "your text here"

To get the clipboard contents

VB Code:

text1.text=clipboard.gettext()

In the formunload event write the clipboardtext to a textfile.
In the foremload event get the text from the textfile.

VB Code:

Private Sub Form_Load()
    Debug.Print RandomString(9)
    Debug.Print RandomString(9)
End Sub
Function RandomString(Length As Integer) As String
    Dim i As Integer
    Do While i < Length
        Randomize
        Select Case IIf(i = 0, Int(1 * Rnd + 1), Int(2 * Rnd))
            Case 0: RandomString = RandomString & Chr(Int(10 * Rnd + 48))
            Case 1: RandomString = RandomString & Chr(Int(26 * Rnd + 65))
        End Select
        i = i + 1
    Loop
End Function

Should be easy enough to make it use a-z and not A-Z, could use Lower(RandomString(4)) even if you dont get RandomString(). Should be able to modify in '@' effortlessly also.