Concurrent users on XI Developer?

I currently support serveral customers for whom we have installed bespoke Crystal RAS systems. As part of the support procedures I have upgraded from an old Crystal Advanced Developer v9 to Crystal Reports XI Developer Edition (now updated to R2 SP4). However, all of my customers use unmanaged RAS servers with concurrent user licensing, how can I emulate the same set-up utilising the Developer version since it seems to support named user licenses only?
My application uses classic ASP via the standard CrystalReports.ObjectFactory and CrystalClientDoc.ReportClientDocument model. Is there something I can add to this to enable named user access, or is there something can be done on the RAS configuration side to allow my concurrent licensing "flavour" of ASP code to work with a named user license?
I donlt need concurrent licensing other tha to be able to replicate and develop against the same scenarios my ciustomers have... as the sole developer I will be the only person accessing my installation of RAS.
I look forward to heating your suggestions and hope for a viable solution.

Thankyou for your replies. I have developed our product using RAS9 up until now, but since nearly all our deployed products are now utilising CR Server XI R2, I need to replace my development system to be able to replicate bugs and add new features using CR XI. It's starting to look as though development users are really not being catered for here... rather a shame seeing as I have attained the sale of about 10 Server licenses for BO/SAP on the strength of selling our system to our customers. Since the RAS delivered with CR Dev XI only allows NULs, I would have to fork out the full Server price in order to have a development system running an unmanaged RAS... a real shame and a huge missed opportunity... even a 1 user NUL would have been sufficient.
The curent scenario was that prompted me toreplace my RAS9 dev system with CR Dev XI was that I was asked by a customer to add the refresh button to the Advanced HTML viewer so that it re-ran the report without prompting for new parameters (i.e. refresh the report data using the same parameters).
After reviewing the documentation, I amended my copy of the CrystalReportsInteractiveViewer.asp file from the ASP developer examples to have the following attribute settings:
viewer.HasRefreshButton = true
viewer.EnableParameterPrompt = false
viewer.ReuseParameterValuesOnRefresh = true
Not having CR XI running on my dev system I was unable to test it, but one of our engineers installed it on site, but said the Viewer refreshed the report, but prompted for new parameters whereas we wanted it to reuse the old parameters.
Edited by: Dave Boulden on Nov 14, 2008 5:11 PM

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Understand that VS Studio 2008's CR with a limitation of 3 concurrent user access, am I right?
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http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/40bccdfd-88a6-2b10-1da1-c47a54b625a7
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