Make a Chart From Log File

Question

I'm searching for information about makin Chart with the information of a log File,
Mine info is as follow:
Object,Counter1,Counter2,Counter3,Counter4, Date Time
A,34,45,67,89,100, 7/30/08 6:50:35 PM
A,35,67,45,89,102, 7/30/08 6:51:35 PM
N,45,67,45,12,67,  7/30/08 6:50:35 PM
N,34,87,56,98,112, 7/30/08 6:51:35 PM

When I choose one of the object it give me 4 diffrent Chart based on period of date  time.