Kiron

Complementing Keith's answer:

# the -like operator does wildcard comparison
# the -match operator does RegEx comparison
# $check contains RegEx special characters that must be escaped to
# include them in the pattern. Remove the '*' and call [RegEx]'s
# Escape Method to create an escaped RegEx
$version = "Microsoft(R) Windows(R) Server 2003, Enterprise Edition"
$check = "Microsoft(R) Windows(R) Server 2003"
$version -match [regex]::escape($check)

# these are the RegEx special characters that must be escaped
#.$^{[()*+?\|

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Kiron