Upload
<form action="/media/services/rest/upload.xml" enctype="multipart/form-data" method="post">
	<p>
		catalogid <input name="catalogid" type="text" value="assets/catalog" /><br />
		assetid&nbsp;<input name="sourcepath" type="text" value="somefile.wmv" /><br />
		<br />
		file <input name="file" type="file" /><br />
		<br />
		<input type="submit" />
	</p>
</form>



Upload Primary
<form action="/media/services/rest/attachments/uploadprimary.xml" enctype="multipart/form-data" method="post">
	<p>
		catalogid <input name="catalogid" type="text" value="assets/catalog" /><br />
		assetid&nbsp;<input name="assetid" type="text" value="" /><br />
		<br />
		file <input name="file" type="file" /><br />
		<br />
		<input type="submit" />
	</p>
</form>