First we need to get you upgraded to the most recent MyEclipse release, please download it from our site and install it to a new directory (never re-install ontop of an existing eclipse or myeclipse install).
Then start MyEclipse using the -clean command line argument to clean out the plugin cahce. Now try and create a page, does it still freeze? If so, try a new workspace first using File > Switch Workspace > C:\tempworkspace, hit OK to restart. Then create a new project and JSP page, if it still freezes, then copy-paste the result from MyEclipse > Installation Summary > Installatioon Details here for me to see.