The product box was sealed with a sticker that was also in the German language, so I couldn't read what the seal said. I was relatively certain it just said something like "if you break this seal, you can't return the product." That is usually what a sealed software product says.
Fortunately the CD itself was multi-lingual. It even defaulted to US English during the install. The installation is fully graphical, and is extremely simple. I would even go so far to say it was the easiest OS installation I have ever seen in my life. I'm not going to say much about the installation process because I feel most articles spend way too much time talking about it. But I do have two quick things I want to mention.
1. As is usual, one of the first things you see during the install is the end user license agreement. I actually read the entire EULA. It's well written and easily understood. Being a huge open source advocate, I cringed when I read the part that said (paraphrasing) "you do not own the copy of the product you bought. You are only licensing the right to use it." That was to be expected though. The product is proprietary/commercial.
For the most part, the EULA was all common sense stuff. The only part of the EULA that I thought was strange was where it said that if you want to terminate your license agreement, you are required to destroy your copy of Zeta, and any backup copies that you might have made. That isn't the strange part. The strange part was the next sentence where it then says that you also agree to return the product to the company if you wish to terminate your license agreement. I thought it was odd that you had to destroy the product, and return it. Moving on...
2. The only complaint I had with the installer was that the partitioning tool was too basic. I decided to install Zeta to a hard-drive that previously had Linux installed on it. The partitioner would not delete my old Linux partitions. That was not a big deal (for me). I booted my Damn Small Linux mini-CD, deleted the partitions, and then restarted the Zeta install. I had no further issues with the installer.
Up and running
The first time I installed Zeta, I did a normal install (the path of least resistance. Fewest questions anyway). The vast majority of programs that were installed with the normal install were pretty terrible, to say the least, and made the menu system appear very cluttered (during a subsequent re-install, I chose the custom option and eliminated almost all of the programs).