Development Issues With SSIS

We have been facing some delevelopment issues with SSIS. These are as follows:

We want to execute some tasks in a particular package depending on a condition. Example: If record count is more than 0 then go to next task else stop the package.
We tried to write a script, in which we evaluate the value of the variable. This variable is populated with the record count value.
We cannot find any particular function which can exit the package successfully. We can fail the Task, but that means the package is failed. wo dont want to fail the package.
In short we want to conditionally execute some tasks in a package. Something like an "If container" similar to "For container".

We have one main package from which we execute 5 other packages. We want to assign values for connection information and variables in this main package only. The other 5 packages should pick values from this main package.

We are scheduling our package from Windows Scheduled Tasks. When the package is run in this manner, it doesnt read values of variables and connections from configuration file. It uses the values that were provided during development which are embedded in the code.


Thanks

Anup