[VE][108] Error Message Feedback

Hello, W3C Validator Team!

I have a question about my Validation Results.
I want to write my Scrips in XHTML 1.1, but I don't know how to fix this 
problem.
If I write the table-Tag like that: <table style="text-align:center;"> 
only the content is centered. But the table should be centered too.
It works with the align attribute but I don't know the CSS attribute for 
this function.
Please can you help me?
Sorry, but English isn't my firth language.

Jens Sauer


     This page is *not* Valid XHTML 1.1
    <http://www.w3.org/TR/2001/REC-xhtml11-20010531/>!

Below are the results of attempting to parse this document with an SGML 
parser.

/Line 289, column 50/: there is no attribute "align"

| <table cellpadding="0" cellspacing="0" align=*"*center">|

You have used the attribute named above in your document, but the 
document type you are using does not support that attribute for this 
element. This error is often caused by incorrect use of the "Strict" 
document type with a document that uses frames (e.g. you must use the 
"Transitional" document type to get the "target" attribute), or by using 
vendor proprietary extensions such as "marginheight" (this is usually 
fixed by using CSS to achieve the desired effect instead).

This error may also result if the element itself is not supported in the 
document type you are using, as an undefined element will have no 
supported attributes; in this case, see the element-undefined error 
message for further information.

How to fix: check the spelling and case of the element and attribute, 
(Remember XHTML is all lower-case) and/or check that they are both 
allowed in the chosen document type, and/or use CSS instead of this 
attribute.