Parsing List in URL Variable for Query

Hi, I am sending a url variable as in the following example:
http://mypage.com/lookup.cfm?var=1001,1002,1003
I then need to query a database given the string
"1001,1002,1003" in #URL.VAR# to find all records that contain
those RecID numbers in my table. Has anyone done this before, and
if so what is the best way to accomplish this?
Thanks!

i tried using the following code, but keep getting an error:
<cfif listLen(url.var) neq 0>
<cfquery name="lookup" datasource="#application.dsn#">
select *
from INVENTORY_CATEGORIES
where
<cfloop list="#url.var#" index="i">
<cfif isNumeric(i)>
CATEGORY_ID= <cfqueryparam cfsqltype="cf_sql_integer"
value="#i#">
and
</cfif>
1=1
</cfloop>
</cfquery>
<cfelse>
<cfset LOOKUP.recordcount=0>
</cfif>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
<td> </td>
</tr>
<cfoutput query="lookup">
<tr>
<td> </td>
<td>#row_id#</td>
</tr>
</cfoutput>
</table>
The error I am getting is:
Error Diagnostic Information
ODBC Error Code = 37000 (Syntax error or access violation)
[Microsoft][ODBC Microsoft Access Driver] Invalid use of '.',
'!', or '()'. in query expression 'CATEGORY_ID= Pa_RaM000 and 1=1
CATEGORY_ID= Pa_RaM001 and 1=1'.
The error occurred while processing an element with a general
identifier of (CFQUERY), occupying document position (2:1) to
(2:54).
Date/Time: 07/24/06 09:50:54
Browser: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1; .NET CLR 2.0.50727; .NET CLR 1.1.4322)
Remote Address: 127.0.0.1
Query String: var=2042,2045
Any ideas? Also, please keep in mind that the variables I
will send across th eurl may also have letters. For example,
var=m1001,1002,p30014. Thanks!

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> (or am i totally misinterpretting the way that URL
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> p.s. do you get anything when i declare you the official
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