Portal sub site..sharepoint ??

Not sure if anyone knows sharepoint here, but this is code in .net if that helps.

Im simply trying to create sub sites in sharepoint using code. So I have this:
VB Code:
Dim site As SPSite
        Dim webColl As SPWebCollection
        Dim newweb As SPWeb
        Dim l As UInt32
 
        site = New SPSite("http://mysite/sites/tests")
        site.AllowUnsafeUpdates = True
 
        webColl = site.AllWebs
        newweb = webColl.Add(CType("tests/OMI", String), CType("OMI", String), CType("Subsite", String), Convert.ToUInt32(1033), SPWebTemplate.WebTemplateSTS, CType(True, Boolean), CType(False, Boolean))
Soon as I run this code right on the last line I get the error:

Code:

Cannot connect to the configuration database. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Runtime.InteropServices.COMException: Cannot connect to the configuration database.Source Error:

Anyone know why I cannot connect to the config db. Not sure what to look for ?

Thanks,
Jon