someone can helpme with the grahps on windows 7?

[amanda7]

hello everybody i hope you can helpme please, because this is my final project to graduate from the university
i install cacti on a windows pc 32 bits, it is a windows ultimate service pack 1 with 2 gb ram, and 1 core of a pemtium 4 inside, well i install cacti but when i tried to get graph i get nothing and i get this error from te debuggin mode i install the apache server and MySQL from xampp, please i hoppe your answers

RRDTool Says:
ERROR: opening 'C:/xampp/htdocs/cacti/rra/smn_carrier_router_traffic_in_43.rrd': No such file or directory