Rails - Jan 2006 - File field

I have a very simple form with only an Input of type file
<%= file_field "image", "file" %>

whenever I choose a file and click on "Create"

I get the following error "No such file or directory"

checking the parameters values show that a slash has been added to the 
file path and name

the file I chose = C:\1.jpg

what Rails is telling me it couldn''t find C:\\1.jpg

Why is this? and whats the solution? Platform is 
Windows\MySQL\Ruby1.8.2\Rails1.0