i have to make a search engine for my client, but i am confusing about indexing websites to search engine database, please can any one tell me how can i achieve this goal? can any one tell me how can i make spider / crawler to do this ? please, I really need help my friends.
Thanks in advance

read this article:
http://www.beansoftware.com/NET-Tuto...b-Crawler.aspx
http://en.wikipedia.org/wiki/Web_crawler

can i build spider in PHP? is it possible? is there any information about spider in php? or any ready made php web spider which i can integerated to my search engine? it should spider websites, images, and musics etc.

hello..
have a look on following...
help full to make web crawler in php:
http://www.thecredence.com/creating-...lers-with-php/

and this for web crawler in visual:
http://www.topshareware.com/Visual-W...load-39202.htm
http://www.beansoftware.com/NET-Tuto...b-Crawler.aspx

thanks my friend i am really thankful to you, i am going to view those websites

I can say with great conviction that this is the wrong forum. Whatever you wind up doing about your crawler, I sincerely doubt that you will do it in JavaScript. (I also hope and pray that this is the case, for your sake.)

but i will make it in php .. i am not much sure about it at the moment i will do more research.

You could integrate Google's search in that site.