Windows NT (that is, any kind of current Windows) file functions will
natively accept either \ or / equivalently in file paths. There is an option
to disable the acceptance of /, but almost nobody knows it exists, and I
can't imagine anyone setting it on a rational system.
The main difference I can think of is "<drive>:", which so far as I know
doesn't exist on Linux derived systems. I'm not sure what the native (to
perl) file calls with do with "C:\foo\bar" if it shows up. If that works, I
suspect almost everything should be fine.
Loren