Use format other than .ico for Icon?

I have some nice icons Id like to use for some programs but you are limited to .ico files. The files I have are .png and Ive tried a few conversion programs but so far none of them keep the icon looking its best.

Is there any way to use formats other than .ico for an icon?

I have used the free online service ConvertICO.com And never noticed any quality problems.

Thanks guys. I checked out what you posted, and I guess the issue I have is that when the icons are smaller, like when you use them on the Task Bar, the quality is diminished. ill have to play around with them more but I think unless its an official icon, its not going to look as crisp.

Here's an example. Full size obviously the icon looks very nice. Smaller, it looks horrible

johngalt said:

IcoFX - The Free Icon Editor allows you to convert to Windows icons, including Vista and 7 compressed .PNG formats for easy scalability, *and* allows you to import Mac OS icons and convert them as well. Oh, and did I mention that it is free?

Thank you my friend very nice program.
I open the icon with IcoFx.
I save it 48x48-32 in my desktop.
How can i set this icon to one folder?
Thank you very much.

pokka said:

johngalt said:

IcoFX - The Free Icon Editor allows you to convert to Windows icons, including Vista and 7 compressed .PNG formats for easy scalability, *and* allows you to import Mac OS icons and convert them as well. Oh, and did I mention that it is free?

Thank you my friend very nice program.
I open the icon with IcoFx.
I save it 48x48-32 in my desktop.
How can i set this icon to one folder?
Thank you very much.

Right click folder.
Properties
Customize
Folder Icon

Antman said:

pokka said:

johngalt said:

IcoFX - The Free Icon Editor allows you to convert to Windows icons, including Vista and 7 compressed .PNG formats for easy scalability, *and* allows you to import Mac OS icons and convert them as well. Oh, and did I mention that it is free?

Thank you my friend very nice program.
I open the icon with IcoFx.
I save it 48x48-32 in my desktop.
How can i set this icon to one folder?
Thank you very much.

Right click folder.
Properties
Customize
Folder Icon

Thank you very much .
It was so easy. Sorry I was confused before.
Thank you very much again

ExNavy11 said:

Here's an example. Full size obviously the icon looks very nice. Smaller, it looks horrible

Can you post it? I can make i smaller, and still keep it good looking