Getting Rid of Wildcard Char. Behide Homepage URL

[Stenrique]

Gooday everyone,

When shopping at my website, Customers have multiple ways to return to my Homepage, namely, by clicking the "Home" hyperlink or the Header banner hyperlink etc. I noticed that sometimes, there are some trailing char. behide the Homepage hyperlink like the following:
http://www.myhaven.com/index.php?main_page=index

Could anyone advise me on how can I get rid of all the wildcard characters that is trailing the Homepage URL?
Change from:
http://www.myhaven.com/index.php?main_page=index
To:
http://www.myhaven.com/index.php?main_page=index
or:
http://www.myhaven.com/

TIA for your kind advices.

EDITED: Never, ever post the zen_id or zenAdminID (session id) in a forum, email, newsgroup, newsletter, advertisement, etc. etc. etc. or you will be doomed ...

[Merlinpa1969]

Sten those wildcards are the zen ID and will only show on first click and when going from ssl to non ssl and back

[Stenrique]

Is there any way to pass those info. through other means rather than the URL?

[Merlinpa1969]

dwno has a module for keeping it hidden, it only shows once

[Stenrique]

Thanks mate.