The technique for producing reincarnational dreams is actually very simple. Once you have learned to recall your dreams, it is a very easy step to "order" your mind to produce a specific kind of dream. You have already done the groundwork as you have learned to utilize your mind to produce a desired result.
Now, instead of merely recalling just any dream, you will tell your mind to produce a specific type (which of course you'll now easily be able to remember).
Before going to sleep, merely "tell" yourself that you want to have a dream about a past lifetime you have lived before. If you are new at this technique you can add the directives that you you want to have a dream about a past lifetime, that you will have a dream about a past lifetime, that you will be able to recall it.
Once you start working with dream techniques you'll soon learn you can finetune your requests for your needs. You can add things such as: "and have a restful night's sleep", "and I'll be able to understand the dream", etc. Start simple and add only what you feel necessary. (otherwise you could have a list a mile long!)
Use the same steps as with any dream recall, and record what the dream was about. Again, when you are adept at dream recall, it really is just a simple step to jump to "programming" your dreams!
Holly C. Sumner 