There are a lot of ways to bot both characters on dual log in. One of the ways is to use virtual desktop. You can search for good virtual desktops on Google.
Another way for windows xp users is to enable user log in. To do this you should have at least 2 users on your system. You log in tantra on one user and run booster from there. After that you switch users and log in another tantra from there and run booster.
Another way is to run booster on your first character and use KP on your second character. To make this work, the character running on KP should be the primary window. If you don't have KP you can download them here. Please refer to my previous post.
The way that I am fond of using is through running Game Renamer. If you don't have Game Renamer you can download this one.
After downloading follow these easy steps.
3. Click on Rename. You will notice that Tantra Launcher on your taskbar will now be renamed to the name you specified.
3. Open booster101 and rename the window caption to make it the same as your renamed Tantra Launcher.
or in the case of booster 1.05
4. Set up your bot and click on Start or Press F8 to Run.
5. Open another Tantra Launcher, log into the game with your second character. Open another booster but this time DON'T edit the window caption. Let it stay as Tantra launcher. Set up your second bot and run.