Peter,
The order was placed 10/05/2004. I am sorry but the link expires after one year. If you did not download the file and put in a safe place, then the only means of obtaining the installation program again is to purchase the upgrade.
I am sorry that you didn't save the file in a safe location.
Here is the Policy, where it has been stated for quite a while:
http://www.mtu.com/support/info.htm
Do I get free upgrades to MTU software products?
Yes, with some restrictions. Starting with Microstudio 2.506, released August 12, 2003, we have a new security protection that requires a Registration Code to install. This code is created when you order from our on-line store, and emailed to you along with the download link to get the program over the Internet. This still allows you to get free upgrades within your purchased version number. For example, if you buy Microstudio 2.506, you can have free upgrades to any 2.5 version, which will be for bug repairs and minor feature additions. When we add major new features and change from 2.5 to 2.6, there will be an upgrade charge if released beyond 30 days from the day you order. For example, if you purchase a 2.604 version and within 30 days we release 2.700 version, we will give you a free upgrade to the 2.7 version.
NOTE: If your Download Link shows expired in your Store account, then you must purchase the upgrade to replace this. When you purchase the software from us please make sure that you download the file and store it in a safe place. You can download the file up to 99 times during a 1 year period. Click here for the FAQ on how to get into your Store account.
Major product changes, for example from 2.x to 3.x, are considered a different product. In this case, if you have purchased a prior version of this product name (Vogone 2.210 for example), for a limited introductory period (usually 1 month), we make a special offer to buy the 3.x product at the retail price less what you paid for the prior version. There may be exceptions to this on individual products.