I'm on a mission to send posts to a Blogger.com blog using their API through WinBatch, and I'm very stuck at the moment -- hoping someone might be kind enough to lend a hand.

Calls to the API are done via XML-RPC, and they give examples of the XML-RPC calls to use for each function, and the URI they should 'go to' (http://plant.blogger.com/api/RPC2).

Here is an example of a function call they give -- you can see the page at http://www.blogger.com/developers/api/1_docs/xmlrpc_newPost.html :-

<?xml version="1.0"?>
<methodCall>
<methodName>blogger.newPost</methodName>
<params>
<param><value><string>C6CE3FFB3174106584CBB250C0B0519BF4E294</string></value></param>
<param><value><string>744145</string></value></param>
<param><value><string>ewilliams</string></value></param>
<param><value><string>secret</string></value></param>
<param><value><string>Today I had a peanut butter and pickle sandwich
for lunch. Do you like peanut-butter and pickle sandwiches? I do. 
They're yummy. Please comment!</string></value></param>
<param><value><boolean>false</boolean></value></param> 
</params>
</methodCall>

There are two things I'm confused about.

[1] Whether or not I have to include the 'header' section as in their example:

POST /api/RPC2 HTTP/1.0
User-Agent: Java.Net Wa-Wa 2.0
Host: plant.blogger.com
Content-Type: text/xml
Content-length: 515

and

[2] How I would go about 'sending' this to the URI they provide, using WinBatch?

(I'm not worried about the parameters within the XML, I think I've got those sorted okay.)