Meta keywords ISN'T important!
Important are (sorted by priority):
1) text's on page (H1, keywords in text...)
2) backlinks
3) keywords in URL + title
4) META description
META KEYWORDs was important in 1996, when search engines don't indexed whole pages, don't looked for keywords in pages and only looked in the META KEYWORDs. Sure, I'm using META KEYWORDs too, but it isn't important, if you will not use it nothing will happened. Focus to points 1-4.
And answer to the your question is:
<META NAME="keywords" CONTENT="kyword1, kyword2, ...">
W3C defined it:
http://www.w3.org/TR/REC-html40/struct/global.html
<META name="keywords" lang="en-us"
content="vacation, Greece, sunshine">
Ok
? Are you satisfied?
If not my contacts are on the
www.Adamek.biz , I will answer all your other questions for 7 bucks (one big diavola pizza) payed to my EP "jaromiradamek"
.