Hello Klonico,
Greetings.
You can create a Dynamic Custom Group for Windows XP and deploy the software to that Group. To create a Dynamic Group, please Go to Admin-->Global Settings-->Custom Group and set the below criteria.
Service Pack-->Equal-->Windows XP Service Pack 3
Looking forward to assist you,
-----
Dinesh Babu J
Sr.Technical Consultant
Desktop and Mobile Device Management Solution
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