Hi hansolo,
You might consider using 'application.cfm', in which you put all your variables. You can access them all over the site without having to add all the info at the end of the URL.
You best store the info in a cookie.
An example of such an 'application.cfm' is:
<CFAPPLICATION NAME="testing"
CLIENTMANAGEMENT="Yes"
SESSIONMANAGEMENT="Yes"
SETCLIENTCOOKIES="Yes"
CLIENTSTORAGE="cookie">
<CFSET mydatasource= "customers">
<CFIF IsDefined("customerID"

>
<cfset customerID=#customerID#>
<CFELSE>
<CFLOCATION URL="login.cfm" ADDTOKEN="No">
</CFIF>
---------
In your CFM files you can easy refer to your datasource name and customerID like:
<cfquery name="customers" datasource="#mydatasource#">
select * from customers
where customer_ID =#customerID #
Hoped this helped you out.
Regards
Bram