ITunes podcast preview page will not link with itunes store in windows

Question

My external url still connects correctly with the itunes preview page and opens the iTune's store in iTunes (versions 9 & 10) on my Mac but when I check the link on a windows vista pc, since the latest version of iTunes was made available, I cannot get beyond the preview page as iTunes is not recognised despite clicking on the 'already' installed link on the page.
Anyone having this problem since iTunes v10 was made available? I've tried it with the full url and the shortened url with the same results.

Answer 1

followed these steps...NO LUCK 5 days and stillnot working
The recommended steps are:
1) Sign out of the iTunes Store by choosing Sign Out from the Store menu in iTunes.
2) Visit the My Apple ID website at:
http://appleid.apple.com
3) If the site is not displayed in your preferred language, click the Change Language link in the upper-right corner, type the name of your language in the field that appears, then click the Save button.
4) Click the "Manage your account" link.
5) Type your iTunes Store account name (which is your Apple ID) in the Apple ID field, type your password in the password field, then click the Sign In button.
6) Click "Addresses" in the column on the left. Look at your shipping addresses at the bottom. If you have multiple shipping addresses, remove any out-of-date or duplicate addresses by clicking Delete. Also, make sure the state or province field is filled out correctly for each address. To edit an address, click Edit.
7) Now click "Phone Numbers" on the left. The area codes should be in the area code fields and the phone numbers should be in the phone number fields. If an area code is missing, or if it is in a phone number field, your account information may not save properly.
8) Make any other necessary corrections, then click the Save Changes button.
9) Click Log out in the upper-right corner.
<Edited by Host>