Hello Vororo, we had Vistaprint make them. There have been some printed t-shirts and embroided polo tops.
At the very least Vistaprint have operations in at least Australia
www.vistaprint.com.au, UK
www.vistaprint.co.uk, France
www.vistaprint.fr and the USA
www.vistaprint.com I suppose they are in most countries.
All that is really required are the graphics which you are most welcome to use and you can get from here:
fixhepc.com/photo-gallery.html (click the T-Shirt Graphics Tab)
Then just make an account on Vistaprint, drop whatever graphic you want onto whatever T-Shirt or Polo takes your fancy, give them a little bit of money and they will be with you in about a week.
If you have trouble with the designing (the widget used to have a few quirks) just send me your account login details for Vistaprint and I will fix it up. From memory it's better to upload the graphics, then add them in, rather than add them in directly.
Anybody who wants to use the images is welcome to do so, but please don't add obscene text!
NB: If you are doing embroidery please note this. The red is pure RGB red, however on Vistaprint, when I did it the first time it looked a bit orange. When the polos arrived they were VERY orange. I rang up, they changed it and sent free replacements, but ... if the logo comes out orange please give them a call before finalising the payment. They will fix the colour thread so they turn out the way you would expect.