You don't need Tech Knowledge to be a Project Manager!
Existing Project Managers will be sure to reply to this situation with all of the "barriers" they wish to throw up to discourage some like this from trying to be a PM. I'm here to tell you to read all responses and pick and choose who you think is providing supportive advice!
The key questions I would have are the following: Have you had experience working on the types of projects you would manage in future? This does not mean the same technology, or anything like that. For example, if you have worked significantly on a project (as a project worker) to implement "ABC", you will be sure to be fine with the sequence of activities of a project to implement "GHI" in a similar fashion!
When a new Information System comes out, no one has experience managing it's implementation, but there are a lot of people who have lots of project experience in similar products.
Don't sell yourself short... if you have experience in similar projects, you should be fine moving up the chain. You will run into difficulties, but not that many more than any Tech-skilled-to-PM manager guy.
We all have our strengths. The trick is to maximize the benefit of them, and then to work hard on the "Weaknesses" you have as well. Who is ever logically going to refuse a person who does that?
