The search request was unable to connect to the Search Service

The WSS project I was working, we have to implement a search mechanism, it should search all the stuff. But the problem, I didn’t see the sharepoint search, and how the results will getting display? While clicking on the search button it will throws an error like “The search request was unable to connect to the Search Service”. I have tried lot of things like changing the Search service running permissions, etc. But nothing happend. And from one MSDN blog I got that I have to start the Indexing service, which is disabled by default. I have logged as Administartor and started the Indexing service from Administrative Tools > Services. Then Indexing Service. Changed the properties, disabled to manual. And started the service. Then I resets the IIS. Clicked Search, in the WSS screen

volia ! it is giving some results.

Update: How to install the Indexing service : Goto Control Panel > Add / Remove Programs > Add / Remove Windows Components > Select Indexing service, if not selected, Click Next, it will ask for Windows XP Service Pack 2 CD(If you are using Windows XP SP2). Then select the location, click ok, Windows will start installing the service. After installing, restart the system, Go to Services from Control Panel > Administrative Tools > Services Or Select Run > Type “Services.msc”, select Indexing service, right click and choose the option start