[via Mark and Todd]
Excellent stuff from CorasWorks. They have a free Web part available to allow users to search across different team sites instead of only in their own.This is certainly a Web part that is going to be very helpful. Thanks CorasWorks for the contribution.
The out-of-the-box SharePoint WSS Search performs a full text search through all of the list items and document libraries (including attachments) in the current WSS site. This search box is found in the upper right corner of a WSS SharePoint web page. Searches via the WSS Search box are limited to the current site. Sub-sites cannot be searched without first going into the sub-site.
The WSS Cross-Site Search Web Part performs the same type of search, except it searches through sub-sites as well. In addition, the starting URL for the search can be customized. As a result, a WSS Cross-Site Search web part placed on one site can search for results within another.
Download from: http://www.corasworks.net/learning/events/MSD2DJanDownload.html
Read more on Todd's posting.