Windows partition not detected

[chemicalrubber]

I am not able to mount my Windows Vista partition (at sda1) from Fedora Core 7 (at sda4). When I go to the /dev directory and double click sda1, i get an error message about not being able to find the partition. What is wrong?

[VictorienSardou]

there is a guide here to mounting ntfs partitions:
http://www.mjmwired.net/resources/mjm-fedora-f7.html#ntfs