How to reduce the thumb size image to a box?

I am wanting to reduce my image size so as to make it into a thumbs so as to display it in the front page box.
How to reduce and make the image into a box?Thanks

 

I would recommend you to use following piece of script code.google.com/p/timthumb/ ... I'm using it on number of my blogs and works like a charm

 

bugger, I'm a new here and still can't post live urls

 

Please PM me the code or link.As I need it very urgently as I am having a website which looks ugly with all those thumbs scattered all around.Thanks in advance