There are quite a few places. I believe the likes of Max Spielmans and perhaps other photo processing shops offer this service. But it is expensive.
Don't you have any friends that have a DVD recorder? It's a simple task to hook up a VCR to it and transfer tapes to DVD. I was a videographer for twelve years, and often transfer tapes to DVD for friends, but I can understand your reluctance to send your tapes off to anyone. If you do send them off anywhere, make sure you send them by registered post.