Searching XML tag in a script

Shell Programming and Scripting
1

Hey,

I need to parse the following XML to just grab the Customer ID.
Is there any RegEx that can achieve this ?

So in this example, the script just return 0000109654, as the output.
Even if it involves awk, sed please let me know.

************
<?xml version="1.0" encoding="UTF-8"?>
<ns0:CustomerUpdate xmlns:ns0="Education and Learning Technology Company | HMH"
FileName="" CustomerUpdateDateTime="2006-05-24T23:02:47.366-04:00" Count="1"><ns0:Customer CustomerID="0000109654" CustomerName="BETHEL PUBLIC SCHOOLS" Status="
A" ClassCode="G" ClassName="Governing Organiz." <ns0:Address AddressLine1="220 175TH ST S
" AddressLine2="LEARNING ASESSMENT BULDING" AddressLine3="" City="SPANAWAY" State="WA" ZipCode="98387-8703" CountyName="PIERCE" CountryCode="US" CountryName="US
A"/></ns0:Customer></ns0:CustomerUpdate>
************

Thanks in advance,
Arun.

2

sed '/CustomerID/!d;s/.*CustomerID="\([0-9]\)" Customer./\1/g;' filename