I assume that you already changed your design and are not using word wrap,
which was at least one of your original problems? Did you run the design
checker under tools?

I am also going to assume that you are using Pub 2003. As to uploading your
html files, when you Publish to the Web you will generate an index.htm file
which is basically the same as an index.html file... .htm is equivalent to
.html in your situation. You will also get an index_files folder along with
the index.htm file, and you will want to upload both.

Here are some references on the uploading process:

Prepare, publish, and maintain your Publisher Web site:
http://office.microsoft.com/en-us/publisher/HA011053521033.aspx

Three top questions about publishing a Web site using Publisher 2003:
http://office.microsoft.com/en-us/publisher/HA011186811033.aspx?pid=CH063577001033

Troubleshoot publishing Publisher Web sites:
http://office.microsoft.com/en-us/publisher/HP062535831033.aspx?pid=CH063577001033

And while you are on the MSFT site: Compress graphics file sizes to create
smaller Publisher Web pages:
http://office.microsoft.com/en-us/publisher/HA011266301033.aspx?pid=CH062524651033
read this section. otherwise you are likely to be back asking why your page
loads so slowly.

And finally David Bartosik's articles about uploading:
http://msmvps.com/blogs/dbartosik/archive/category/1921.aspx
Unless you are using forms on your website you can use FTP uploading
protocol. If you are using forms HTTP uploading will be required. There is
also a troubleshooting article.

And finally, some people find using a third party FTP program easier.
Filezilla is a free and popular one:
http://sourceforge.net/projects/filezilla

DavidF