File Upload problem. please help

Hi, I am trying to upload a file using php. I have changed the configuration in php.ini and set the upload_tmp_dir to a folder. i am uploading the file using the post method. Every time i upload a file a zero byte file gets created in that folder. Any one of you have uploaded a file using php. please help. if you have any sample code or a web site that can help. I would be happy. I have checked the www.php.net/manual and found some help related to this topic. Hoping one of you can help me. Regards, Jayaprakash. __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/