no device recognised in my itunes

I have got this far on the advice, up to part 10 but when I right click the iphone, I do not get the option to update driver. PLease somebody help.........

THANKS TO THE ABOVE!!! IT FIXED my DELL / 64bit Win 7 Problem! Here's a MORE DETAILED SUMMARY of the above to hopefully make things more clear:

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OK-
this is a re-written compilation of fixes from various folks (@cdnfs, @codyc3)
which hopefully will be easy to fix your iPhone sync step-by-step.

My new DELL P55 / Win 7 FINALLY recognizes my iPhone and SYNCS!

I will try to summarize the steps:

1) DOWNLOAD (don't run directly) iTunes64Setup.exe from iTunes website.
Make sure you know where you saved this file.
Double click it, and install iTunes.
Install latest iTunes (assuming 64-bit)

2) Plug in iPhone.
Make sure computer recognizes the iPhone.
In Win7, go to Device Manager (under Control panel / Hardware), and go to the "Portable Devices" section. Apple iPhone should be listed. We will come back to this step later.

3) Download Universal Extractor from this site: http://www.filehippo.com/downloaduniversalextractor/ (or search for this file. I tried using Less MSIables, but didn't work)

4) Install Universal extractor program and run program.

5) Select iTunesSetup.exe file to extract, and choose a Destination Directory.
Click ok, and choose "Not an installshield install", and it should extract this file.

6) Within this folder, find "AppleMobileDeviceSupport64.msi".

7) Go back to Universal Extractor program, and now extract AppleMobileDeviceSupport64.msi to a destination directory of your choice.

8) Click ok, and Choose MSI Administrative Installer method, then click OK.

9) A new FOLDER called "AppleMobile DeviceSupport64" should be created.
Within this, goto Common Files/Apple/Mobile Device Support/Drivers
to find files called "usbaapl64.inf" as well as 3 other files.
REMEMBER THIS LOCATION.

10) Go BACK to STEP #2 and within the Device Manager, RIGHT CLICK on Apple iPhone and select "Update Software Driver".

11) Choose Browse My Computer for driver Software.

12) Browse to the "Drivers" folder in step #9 where usbaapl64.inf is located and choose this folder.

VOILA! Your iPhone drivers are now CORRECTLY INSTALLED!!!!!!!

HOPE THIS HELPS SOMEONE as it FINALLY FIXED THE PROBLEM!!!!