We run Progress version 9.1E including AppServer. We have Microsoft .Net web services that access the database via AppServer. The database runs on an HP/UX box. In Progress 9.1E, ProxyGen is a Java class inside prowin.jar and runs via executable wjview.exe from Microsoft. ProxyGen is entirely tied to MS Java. We are NOT interested in updating the Progress database at this time. However, our development staff will be running Windows 7. We would like to upgrade ProxyGen on our Windows PCs. We would like it to generate DLL with the .Net 4.0 compiler. I understand the newer versions of ProxyGen are not written in Java. I also understand that AppServer OE10+ will successfully access a Progress 9.1E database. Can someone tell me what we minimally need to replace the current 9.1E ProxyGen? Do we have to replace all of AppServer? Will Progress Open Client OE11 ProxyGen work with AppServer 9.1E on the unix box?