Basically, what's so weird about asking for her phone number of
MSN?
If you're interested in getting to know her more, then just try to
ask for her number or MSN. The situation is in your favour actually
since you've at least 2 friends who know her. If you happen to know
or overhear your 2 friends are going to meet her for something, try
to tag along and ask to join them, then pretend to be surprised
when you "meet" her during the outing or meetup. Surely out of
courtesy, your 2 friends will introduce you two like casual
acquaintances do.
I can sense a little lack of confidence in you when you commented
you're not good-looking.
Try to put the thoughts of chasing her or trying to make her your
girlfriend behind first. Treat it as getting to know a new friend
only and this will help you not dwell so much on whether you guys
are compatible or attractive to each other. And this means less
pressure on you to make the relationship blossom.
For all you know, once you begin to know her better, you may
suddenly realise she's not the gal for you, and you don't even have
to worry about your own looks anymore since you won't be doing the
chasing.
Just my 2 cents.
