Vista - Alter Icons

Hey whomever reads this.

Right, I have downloaded some custom desktop icons, favourite button, stop button in explorer and such, and they're all .png files.
What I need now is the knowledge of how to apply them to my laptop.
Is there some kind of specific software i need to do it?

What is the inevitably long and tiresome procedure for this?

Thanks a lot,
Andy

Set up a folder on your computer and put the png files in there.
Right click on an icon you need to change and then select properties.
On the bottom is 3 buttons, the middle one being change icon.
You may have to change your pictures to icon format, I dont know if PNG files will work as an icon as they are but try it to see.
Give us some feedback on how it went.

If you need to convert the icons, try toycon. It works great, and it's free.

Download ToYcon on CrystalXP.net - Launchers

Righto, thanks for your help guys. The result so far, I managed to convert PNG to ICO, and so now my computer, recycle bin, network and some self-created folders are customed to perfection, so all that's good.
However, There are more icons for, say, .mp3 files, and the DVD drive.
I have no idea where to find these on the laptop in order to change them... any clue?

This stuff really does look pretty. I love Vista.
Cheers, and thanks again!

IconTweaker has done a good job on that for me in the past.

Download IconTweaker on CrystalXP.net - Explorer tools

Well... it says my windows version is not supported by that programme (UK Spelling), my system is vista home premium 32 bit...? I'll try and download it elsewhere anyway but keep solving if you can!