Sometimes, aye. :D
Depends on the woman though; plus how she's feeling, whether she likes the look of you, what the weather's like etc. Or the look on your face - I mean, the 'lecherous gawp' look isn't gonna cut it but a smile might. People like being looked at.
And women are just as guilty of perving; most of them anyway. Tend to feel less of a need to reaffirm it verbally though, although there are many exceptions to that rule. Especially in Manchester, as Ponch can vouch.
Again, the approach varies from the standard quick scan to my personal fem-perv favourite, the 'face-glance followed by crotch stare'. Followed, if the stare meets with approval, by a cheeky smile.
Perving's pretty universal. I'm glad.