I have started to use ACT to load test a .NET application. Capture / Replay generated the base code, which was modified to produce the desired loadtest logic.

When we receive any modification to the system, ACT stops working and requires that the capture be redone.

If I bypassed the capture tool, could I write the ACT code myself? I have noticed that with .NET applications, the Viewstate contains a long binary string, which would be impossible to develop manually. Is there a way around this?