If the path is entered from the command line, you need not tamper with the backslashes. (See the code below.)

Also, I notice that cmd.exe on Win2K treats:

c:\mydir
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and

c:\\mydir
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as equivalent. For example, the following works fine:

md c:\\mydir\yourdir
pushd c:\mydir\\yourdir
popd
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Here is some code that takes a path from the user and creates the specified directory:

print "Enter string: ";
$dirname = <STDIN>;

#
# Must chop the string that the user entered,
# since mkdir won't accept a directory name 
# that contains a newline character.
#
chop $dirname;

#
# This line is optional (at least on
# Win2K), since cmd.exe considers
# c:\mydir and c:\\mydir to be 
# equivalent.
#
# So double the slashes or not,
# as you please.
#
$dirname =~ s{\\}{\\\\}g;

print "Creating . . . $dirname\n";

mkdir($dirname, 0777) || die "Couldn't create $dirname. Error: $!\n";
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Carl-Joseph