Sort::Naturally will do this:

(Updated to show that it will also work fine with something like "text69.something-14-14")

(Update 2: Sort::Naturally also handles the data used by BrowserUK below "correctly") :)

#!/usr/bin/perl -w
use strict;
use Sort::Naturally;

print for nsort(<DATA>);

__DATA__
text1
text69.something-14-14
text2
text37
text5
text3
text10
text11
[download]

Gives:

text1
text2
text3
text5
text10
text11
text37
text69.something-14-14
[download]

Cheers,
Darren :)