Querying the amazon product API

Hi - I am looking to construct a search script that queries Amazon Product API using keywords or ASIN or browsenode. Has anyone attempted to do this? Does anyone have a working example?

An itemsearch URL is structured like this and returns xml:

http://webservices.amazon.com/onca/xml?
Service=AWSECommerceService&
AWSAccessKeyId=[AWS Access Key ID]&
Operation=ItemSearch&
Condition=All&
Availability=Available&
SearchIndex=Apparel&
Keywords=Shirt
&Timestamp=[YYYY-MM-DDThh:mm:ssZ]
&Signature=[Request Signature]

Many thanks

Hi,
Did you find anything because I am in desperate need of the amazon product api examples too.

Thanks in advance