Creating a listing in MS Word and copy/paste into the eBay description converts MS word format to HTML and the conversions can be quirky. It also results in a bloated HTML. You should use an HTML editor to create proper HTML.
Graphics or pictures must be hosted on a third party site such as Photobucket and just the URL placed in the description using HTML.
For help on this, ask your question in the eBay.com forum Photos & HTML.
eBay member shipscript is a regular helper there as well as others.
shipscript has made many free tools for use in eBay listings. See her eBay about Me page here:
http://members.ebay.com/ws/eBayISAPI.dll?ViewUserPage&userid=shipscript
There are some HTML editors listed on that page.