In this paper, we describe SGSDesigner, the ODESGS Environment user interface. ODESGS Environment (the realization of the ODESGS Framework [1]) is an environment for supporting both a) the annotation of pre-existing Grid Services (GSs) and b) the design of new complex Semantic Grid Services (SGSs) in a (semi) automatic way. Categories and Subject Descriptors D.2.2 [Software Engineering]: Design Tools and Techniquesuser interfaces General Terms Design, Theory. Keywords Semantic Grid Services, Problem-Solving Methods.