Can you check the C:\Windows\Temp\McAfeeLogs directory and see if it created a log file for the install of VSE?
Also make sure whatever patch level of VSE 8.8 your trying to deploy is compatible with your XP versioning. https://kc.mcafee.com/corporate/index?page=content&id=kb51111
all sorted - for some reason I had to take the proxy out and re add it. which made it kick in.
cheers for the suggestion.