Hi,
Have you looked into Windows Management Interface (WMI) scripts, which should do what you want (i.e. monitor hardware performance and uptime)? You don’t need BizTalk in this scenario if you are only doing notifications of system failures, you might want to check into MOM (Microsoft Operations Management), SQL Server Notification Services or something of that nature.
BizTalk is ideally suited for B2B messaging exchanges, routing and transformation between corporate business and outside vendors/providers/partners with standard interfaces (i.e. EDI, X12, HL7, HIPAA, EDIFACT, etc.) .
I hope this clarifies things for you.
Daniel.