If you want to migrate all your projects from CVS to SVN and maintain the same structure, just install
cvs2svn and run it for each of your projects:
# SVN_DIR -> Folder where the svn is going to be
# CVS_DIR -> Folder with the cvs stuff
# Project -> Name of each project
# create the target directory if it doesn't exist
mkdir -p SVN_DIR
# run this command for each project
cvs2svn -s SVN_DIR --existing-svnrepos CVS_DIR/Project \
--trunk=Project/trunk \
--branches=Project/branches \
--tags=Projet/tags \
--encoding=utf-8