FRUSTRATED!!!!!!!!!!!!!!!

I learned you can make free and cute headers for your blog at scrapblog.com (Thanks Ali!!!). I was planning on heading to bed, but I got so caught up on trying to make a new header for our blog that I couldn't pull myself away from my computer. Well...I have this cute little header, and can't figure out how to get it to post! I figured you just go to header, erase your current imagine and paste the code in the "from the web" spot, but that didn't work! I have tried many other ways, and for some reason still can't figure it out. Maybe I am an idiot. Maybe my brain is not fully functioning at the moment since it is 1 AM and I am running on very little sleep as it is. I'm not sure what the problem is, but I could really use someones help who does know how to do this. Obviously I don't expect any answers tonight, because unlike me the rest of you are probably smart enough to be in bed. So I am forcing myself to pull away from the computer now, I am leaving my header blank of any pictures at the moment and hoping that by the time I get back on here tomorrow maybe someone who knows what they are doing can give me a few tips! Thanks for reading this as I have ranted and raved, and thanks to any of you who happen to help me out so I can get my cute, simple and personalized header put on here!