Hi Shiner
It must be very frustrating! It's all part of a cunning plan. We have had a team of experts specially prepare our site so that it can appear to the rest of the world but when you log on, it automatically hides 
I still have no idea why you are experiencing these problems. Can you even get our front page - www.gardinerpolesystems.co.uk?
That cunning plan bit sounds like that line from the "Black Adder" TV series Alex

I can't get any part of your site at all Alex. I've tried IE 6.0, Netscape 8, and Opera. I used to be able to access it just fine. I first noticed a problem a few weeks ago when you were posting pics on here which didn't show up. At first I assumed you had made an error with your uploading as I could see everyone else's pictures. However, when it became clear that everyone else could see what you were posting, I started checking my browser's settings. When I couldn't view the pictures or the site in any of my browsers, it has caused me to wonder if there is some obscure glitch in my operating system settings - though what that might be is anyone's guess. I've checked the setting on both firewalls and no problems there either. I have even dropped the security settings (temporarily of course) and checked that your site hasn't somehow got onto any banned sites list in my browsers - though as I'm the only one who uses this computer I reckon that would be impossible anyway.
I'm sure the solution will reveal itself one day. Hop[efully I will still have some hair left.
I may try Alex Wingrove's suggestion of trying yet another browser but if itr doesn't work in three of them I don't hold out much hope of it working in a fourth.
I have actually posted about this problem to a Windows XP newsgroup so maybe someone there can shed some light on it.