Have a look at this example:
397 Workarounds, Filters, and Hacks
This conditional comment will select all IE browsers with version numbers greater
than or equal to 6, which will obviously include IE7 and even IE8??”if it ever makes
an appearance!
It should be noted that when you use a single digit to represent the version of IE
you want to target (for example, [if IE 7]) that directive will be applied to all
versions of that browser including those with version vectors. For example, if you
used the conditional comment below, you??™d be including all versions of IE5 including
IE5.5:
Targeting Point Releases
If you want to target a specific point release, you??™ll need to specify the correct version
vector.5 You can specify a point release using a number followed by up to four
decimal places. Even though this appears as a decimal number, IE doesn??™t see it
that way: each individual digit is compared separately.
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