I'm not sure if I would be able to use this or not, I've seen some photos here and else where - where the use of external lighting sources are used for portraits.

For outside portraits I've been using my 580EXII flash the light the subject and it's been during the day. Some times it's enough and sometimes it's not. I've seen some photos of such as this one and would like to do something similar. I can't tell if they are using a flash, external light or a flash light.

I was thinking about this as it seems like a decent starter pack:
http://www.adorama.com/FP620MPWK.htm...ck-to-top-link

Can I achieve that look with a flash or should I use a monolight?