Simple. First you need the software to do it. The best to use is Adobe Photoshop or Paint Shop Pro. After you have them its easy. After you make a banner then you need to upload it to a hosting site so all of the members of this forum can see it. If you dont upload it and take it from your hard-drive only you will be able to see it. The hosting sites I use are
www.boomspeed.com,
www.7host.com,
www.ranchoweb.com,
www.sigrealm.com...plus many, many more. After that you take the url of the banner and use the [code:1][img] and [/img][/code:1] to post it. Make sure you put the code in the signature.
If you cant make one or want me to make you one then come to my forum and post a request in the banner/avatar request section....towards the end of the page. My forum is
http://lordgrobyc.hyperboards2.com or you can just simply click on my banner.