Write RSS for wordpress with custom fields

I want to manually write my rss and use it to import posts into several blogs i have

<item>
<title>testin</title>
<description>hello</description>
<custom field????    
</item>

How to add a custom fiel开发者_开发技巧d to be seen by wordpress?

Is there a free soft which i can use to write rss quicklier?

TY!

If you want WordPress to "see" it, you will have to convert your xml into structs that match what WordPress is expecting for newPage, newComment, newCategory etc... you can see the struct parameters as well as return values here...

WordPress API