How to send image via webservices with other information.

Hi to all,

I want to send image through other details.

For Example My xml is like this and I want to send like as string (Return type as string).

<xml>
<uid>xxxxx </uid>
<logoimg>Here My Byte code<logoimg>
......
......
<xml>

How can i do it, user after getting the xml how he can save it as image again..

Please give me all details..