Bear in mind , the system requirements for ApplicationServer state Windows 2000/2003 Terminal Services.
While you may currently have a working solution, 2X is only ever gonna test and support the recommended platforms. Therefore if a new version comes out and doesnt work with your solution, you are on your own, without support.
Im glad your solution is workign for you , but bear in mind when implementing systems you should always consider, the 1 year, 3 year, 5 year plan
Users become familiar with a working system and when it suddently doesnt work anymore or you cant add the new features due to lack of forward planning then it causes problems.