While I'm not really sure exactly what you're looking for, I have two recommendations that have helped me a lot.
I purchased the Verbarator last year, and found that it REALLY helped me get through the verb conjugations. While not a teaching system itself, it allows you to practice using your choice of verb conjugations. It covers all the tenses, and using it's built in "phrase maker" option it puts the verbs into sentances. I found that it was (and still is) invaluable practice, and I learned a lot of additional words using the phrase maker. Other than Rocket Spanish, it is the one program out there that is really worth the money. You can set just about every option available, and is a solid system.
The other window I open every time I open Rocket Spanis is Spanishdict.com. A great resource as a dictionary, you can translate entire paragraphs if you wish, check your grammar, and learn about all of the verb forms, as well as many other subjects, on their site. The fact that it is a free resource makes it worth every cent! While listed as a "dictionary", I find it to be more of an encyclopedia, as it includes much more than just definitions. Like Rocket Spanish, I use it every single day.
Hope these suggestions help!