Found this useful today:
You can pass parameters in the cfinvoke tag as tag attribute name-value pairs, as the following example shows. You can also use a relative path to the CFC.
<cfinvoke component="/path/to/authQuery" method="getAuthSecure"
lastName="#session.username#" pwd="#url.password#" />
can also be written as
<cfinvoke component="/path/to/authQuery" method="getAuthSecure">
<cfinvokeargument name="lastName" value="#session.username#">
<cfinvokeargument name="pwd" value="#url.password#">
</cfinvoke>