DATA RECOGNIZER-- Help

I tried to write data recognizer for non-native file:following is the .RSS file

#include

RESOURCE REGISTRY_INFO r_registry
{
dll_uid = 0xE8000002; // should match name of this file
interfaces =
{
INTERFACE_INFO
{
interface_uid = 0x101F7D87; // need to create this uid in the uid database
implementations =
{
IMPLEMENTATION_INFO
{
implementation_uid = 0x101F7DA1;
version_no = 1; display_name= "ExampleRecognizer";
default_data = "";
opaque_data = "";
}
};
}
};
}
1.In the above code what value I should set for "implementation_uid"? Is it the application uid by which file is supposed to open?
2.How to associate the (Eg *.awg)no-native file with a perticular application.
3. What should be the MIME type for a non-native file type while implementing DoRecognizeL()?