Runtime error 53

I have a database setup to open html links that are stored in a table using the VB code below:

The problem is that it only works on some people's computer and not others depending on which version of windows they have. An alternative was setup to try and open on everyone's computer...it worked on a one system but not all systems. Any more alternatives recommended?

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Private Sub Command55_Click()

Dim Link As String
Dim Quoted As String

On Error GoTo Alternate1
Link = "netscape " & DLookup("[WebLocation]", "Procedures", "[ProcedureID] = " & [Forms]![SignOff Sheet]![Procedure])
Call Shell(Link, vbNormalFocus)
Exit Sub

Alternate1:
On Error GoTo Alternate2
Link = "start " & DLookup("[WebLocation]", "Procedures", "[ProcedureID] = " & [Forms]![SignOff Sheet]![Procedure])
Call Shell(Link, vbNormalFocus)
Exit Sub

Alternate2:
MsgBox "Cannot Open Netscape. Please open manually and locate the desired spec for review"
End Sub

I looked up your problem on Google and by all accounts, a referenced dll can't be found. It's my experience that not all computers have the same DLL's even if they have the same software installed. That's why it works on some and not others. Check your references on your's and all the computers you install on.

HTH
Marty

I copied all the dll files from the office folder as well as the netscape folder and it still didn't resolve the issue...gave the same error. Are there any other dll files I should be copying over....I thought about the ones in the windows folder, but two of the users that have the issue have different versions of windows.