[Mediawiki-l] Two URL q's. Link to files and directories, and target = blank for new browser window

[Mark Lilly]

hi All,
I'm a bit new to MediaWiki and coming from pure HTML/PHP etc, i can't seem to 
figure out what i hope i can do:

1. i am working on an internal intranet, and we have lots of directories on 
networked servers. I would like to link to these via a URL so users can get to 
them. In HTML, it would be: 
file://pathToServer\pathToDir

but, i see the file:// prefix is not allowed for the URL [[ ]] feature. Is 
there another way???

2. for some of my external links, i want to open a new browser. In HTML:
<a href="example.com" target="_blank">Click Here</a>

how to do in MediaWiki?

Thanks!
mark