VB.net application that takes forever to load and run

Question

Help, I have this application in vb.net with more than 100 forms. The application takes nearly 3 minutes to load and the performance is terrible. The PC I run the application from have the following specs: pentium 4 3.0 with 512MB Ram. Question, how do I split up the application into smaller chunks, dll or whatever to speed up the loading and conserver memory? Thanks