I wrote a simple osdx to implement federal search for msdn on Windows 7. You can click here file to download.
Here is the osdx code, you can modify it and save as msdnsearch. osdx
<? XML version = "1.0" encoding = "UTF-8" ?>
< Opensearchdescription Xmlns = "Http://a9.com/-/spec/opensearch/1.1"
>
< Shortname > Msdn search </ Shortname >
< Description > Opensearch for msdn via Windows 7 search Federation. </ Description >
< URL Type = "Application/RSS + XML" Template = "Http://social.msdn.microsoft.com/Search/Feed.aspx? Query = {searchterms} & amp; locale = en-US & amp; format = RSS" />
< URL Type = "Text/html" Template = "Http://social.msdn.microsoft.com/Search/en-US? Query = {searchterms }" />
< Longname > Msdn Web Search </ Longname >
< Contact > Duanjunyi@live.cn </ Contact >
< Image Height = "16" Width = "16" Type = "Image/vnd. Microsoft. Icon" > Http://blogs.msdn.com/favicon.ico </ Image >
< Developer > Duan Junyi </ Developer >
< Attribution >
Search data Copyright 2009, Microsoft.com, inc., All Rights Reserved
</ Attribution >
< Syndicationright > Open </ Syndicationright >
< Adultcontent > False </ Adultcontent >
< Language > En-US </ Language >
< Outputencoding > UTF-8 </ Outputencoding >
< Inputencoding > UTF-8 </ Inputencoding >
</Opensearchdescription>