Mps - Microsoft and SAP R/3 - description from Softdepia.com:
Mps is an interface to MSProject and SAP R/3 PS which allows you the access to data and functions of both systems. You may handle data individually in both programs. Afterwards you just transfer the changes via Mps into the other system. Additionally, Mps may plot S-curves for MSprojects. Mps can also transfer PS information from R/3 to R/3 system or from/to Excel and R/3.
Mps - Microsoft and SAP R/3 is a "Free to try" program. You can download and try it for an evaluation period.