Hi, welcome to LQ.
Begin your post, then click the "Go advanced" button at the bottom of it, then click the "attachment" icon (with the paperclip) in the toolbar of the post.
In the "Manage Attachments" window click "Browse", select the file you want to attach then click "Upload" and close this window.
Not all file types are authorized so rename text files appending ".txt" to the name.
Adding images whose name end in .gif or .png for instance is fine.
Last edited by Didier Spaier; 06-03-2012 at 09:19 AM.