Rigged Edges! Help! Options

[chod3994]

I really hate how my image in photoshop turn out bad just because when i cut out the person the edges are bad, look at the example below.
http://img141.imageshack.us/img141/6845/testzg5.png

Is there a way that I can make the cut more professional?
I use the poloygonic lasso tool, is that the right one to use?
Also I use adobe photoshop cs3 extended.

Thanks in advance, i love everyone XD!
:)

[chod3994]

^^ lol srry i glanced at their name XD sorry!

Nik- I guassian blurred it then i set it to 50% opac
and it did nothing, is that what you ment for me to do?

Manny- It makes round edges on her body, is there a way to fix that?

ee hee im tomates
but you just pernounced my name in enlgish XD so cant blame you there
and its the little box with the circle
well actually its two boxes next to each other.

Im horrible when it comes to explaining things XD

XD i found it but how do i edit it in that mode exaclty, like what does it do for the image, it makes a rubyish opac color over the image but thats all I see. XD maybe im slower then i thought lol.
:)

Reason for edit: i merged your posts b/c you cna't double post ^_^-christy

[manny-the-dino]

^

Manny- It makes round edges on her body, is there a way to fix that?

When you smooth it, make sure you put in a low number like 5 because if you put like 20 the edges will come out really rounded.