...vector question, imageready? illustrator?? Options

[rnrn897]

ok.. i have adobe photoshop 7 and image ready 7..
i was reading this tutorial that cep gave me
>> http://www.createblog.com/forums/index.php?showtopic=12157

and she sed 'imageready' then she says 'illustrator'

i think pen tool is in photoshop too but im not sure, cuz ps wont boot for me anymore, so i use imageready.


Using the Pen Tool 

In illustrator is a tool called the pen tool, which is located on the toolbar; third one down on the left.

so im wonderin if imageready & illustrator are the same thing..
i jus learned this vectoring thing today - and i used adobe photoshop.. is it better to use illustrator? [if so, why?]