When you create a webs account, use the "File Manager" tab to upload pages and such to your account. Hit "Single File Uploader" to upload a .txt or .html document (you can just create a .txt document with a few words in it, really). Remember that when you do upload a .txt file, to rename the file with an .html extention (i.e., mypage.html). Edit the page, then paste whatever codes you have. You can look at the layout by pressing the "Toggle Split Mode" button at the top left of the page, third icon from the left. Work with whatever you have, then save it, and you're done.
I really hope that made sense. I can't remember what the site actually looks like when you first create a webs account, so if you're confused, I can try to help you further.