Use the latest version of JMeter, which is 2.11 (this time after posting this answer). http://jmeter.apache.org/download_jmeter.cgi
Do you mean "default HTTP requests"? (It allows you to set default values for your HTTP request)
If so, as they say, it will be available along the following path.

"HTTP-" - . . " ", .
, .

→ Sampler → HTTP Request.
