No insulin resistance is not necessarily type 2 diabetes, but it can progress to type 2 if you don't get it under control - eg. with exercise, healthy diet, insulin-sensitising medication such as metformin.
I was diagnosed as insulin resistant & at pre-type 2 diabetic stage late in June 08. this was discovered after high reading came back on fasting glucose level, than they did a glucose tolerance test to see how my body reacted to a measured dose of glucose over a 2 hr period - these levels also came back high.
My symptoms are PCOS, overweight, high glucose levels, high blood pressure. I got pu on metformin 500mg twice a day and lost around 10-12 pds since July 08, so it is helping things. I'm following a low GI diet which targets insulin resistance (slow energy-burning foods that help your metabolism work more efficiently) & trying to exercise more - exercise is the key, but I'm still struggling with this part of it!!
If you want to know more about insulin resistance, a great book I got recently is "The Low GI Guide to Managing PCOS" - it has a lot of specific info on PCOS & i.r & how to get it under control through low gi foods & exercise. I think I saw it listed under a books section on c.systers somewhere as available in other countries (my copy was published in Australia).
Hope this has been of some help!! Good luck with your test results!

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Dx'ed PCOS 6/08. BP meds since 8/08. Met 2000mg 2/3/09
5th cycle 50mg clomid 12/21 - O'd CD 23-24
BFP 1/24/09 ended in M/C on 2/23/09
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6th cycle Clomid 50mg 4/14/09 - No O
7th cycle Clomid 100mg 5/!!/09 - BFP 6/4/09!!
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