I develop web site about different programming technologies, such as .net, c#, asp.net, php, css etc. And i need quality icons with logos of various technologies. When can i find such icons?

Well, I can see where you'd have problems doing a simple Google image search as I did, getting not too much in generally saying 'program language icons'. However, I noticed if you do a separate search for each, such as 'php icons' there are some decent ones Google will find for you if you are willing to crop. Otherwise, I guess most people get them from copying off other sites.

Good luck, how I could be of some help atleast.

Hey

If it's a website that you want to look unique, you're better off learning illustrator and drawing those icons yourself, or paying someone to do them for you if you can't find any same size icons on the net that are FREE to use.

But in my opinion, pay someone a few dollars and they can draw them up for you and it will give your website a more visual appealing and professional look

This wasn't really a helpful answer, just an idea

Most of our website is to design the logo and icon ourself