I see it in many pictures of you a invisible background  
how do you do that??

---------------
Bad English because German^^

I guess you're talking about transparency. When you create a file in Photoshop, choose 'transparent' for background color. Now your files will be transparent.

thanks

---------------
Bad English because German^^

 
Ana also remember to save them in .png format

---------------

yes when the picture is a png all is right but i want convert the picture in an ico I have a black background

---------------
Bad English because German^^

What's the application did you use to convert? (use Aveicon)

---------------

i use irfanview  
and the download link(i don´t can speak this language)  
can you give me a direct download link??
i haven´t find the download on this page

---------------
Bad English because German^^

It seems like that the link is broken
 
Try [this one

---------------

thank for this nice tool

---------------
Bad English because German^^

and I have a second question  
can I create icon groups to replace it in reshacker ??
 

like a ico pack

---------------
Bad English because German^^

You can also try axialis icon workshop
 
Regarding your previous question, I dont know what to say  

I would rather suggest you to use IcoFX for making icon packs and other icon editing

I don't get why you guys don't do it in Photoshop itself.

---------------
Glomping the internet populace.

One forum at a time.

how i can create photoshop that ??
i don´t know anything of this action
 
but tanks for your nice answers  

---------------
Bad English because German^^