Our IPD-projects have changed: more international partners became involved and simultaneously we started to carry out real projects for real companies. This caused a number of problems. In order to be able to give full support to the projects and conclude them with a nice, formal symposium we need financial funds. Therefore companies were asked for additional sponsoring, which introduced new problems. How we dealt with all these problems is explained in this paper. Other ways of co-operating with different partners in the IPD-projects are also considered. A recent development is to create combinations with students from secondary technical education that already work in practice. First experiments have started in February 2004. First results and further plans on these combinations are reported here.