Automatic Performance Monitoring

I wish to produce daily/weekly charts for server utilisation with little operational intervention.
Performance monitor does not provide a printing function, so the charts have to be exported to Excel and charting set-up for each new spreadsheet.
Iam looking for a way to automate the process, perhaps using a tool to open and read the raw .log file (producted from performance monitor). If such an editor tool exists then an Excel pivot table could be created to supply the data for the graphs.
Any ideas ?