From 3.0.7 To 3.5 - Whats With My Database?

[Wordplay]

i'm about to upgrade to 3.5 but what should i do with my database?

now i've got alot of hacks installed on my vb 3.0.7, what i'd like to know is. should i delete some database tables? now my 3.5 wont have any hacks installed from the start, and the hacks that come later on are all supposed to start a-new without old database tables. so can i just delete the tables i dont need and then back up the entire database and import it to my new server with 3.5 installed? if so what tables can i get rid of? or what tables do i need to keep?

  4images_categories
  4images_comments
  4images_groupaccess
  4images_groupmatch
  4images_groups
  4images_images
  4images_images_temp
  4images_lightboxes
  4images_postcards
  4images_sessions
  4images_sessionvars
  4images_settings
  4images_users
  4images_wordlist
  4images_wordmatch
  access
  adminhelp
  administrator
  adminlog
  adminutil
  adv_modules
  adv_pages
  adv_setting
  adv_settinggroup
  announcement
  attachment
  attachmenttype
  attachmentviews
  avatar
  banners
  battlesys_battles
  battlesys_favlines
  battlesystem
  bbcode
  calendar
  calendarcustomfield
  calendarmoderator
  calendarpermission
  cpsession
  cron
  cronlog
  customavatar
  customprofilepic
  datastore
  deletionlog
  editlog
  event
  faq
  favourites
  forum
  forumpermission
  game_rate
  gamechallenges
  gamenews
  games
  gamesessions
  gifts
  his_installed
  holiday
  icon
  imagecategory
  imagecategorypermission
  journal_comments
  journal_entries
  journal_moods
  journal_settings
  journals
  language
  mailqueue
  moderation
  moderator
  moderatorlog
  passwordhistory
  petz_adopt
  petz_arena
  petz_bank
  petz_battle
  petz_default
  petz_inventory
  petz_items
  petz_logs
  petz_petz
  petz_settings
  petz_shops
  petz_store
  phrase
  phrasetype
  pm
  pmreceipt
  pmtext
  poll
  pollvote
  post
  post_parsed
  posthash
  postindex
  profilefield
  ranks
  regimage
  reminder
  reputation
  reputationlevel
  search
  session
  setting
  settinggroup
  shoutbox_posts
  smilie
  statistik_browser_os
  statistik_domain
  statistik_einstellungen
  statistik_laender
  statistik_log
  statistik_referer
  statistik_spider
  statistik_zaehler
  stats
  strikes
  style
  subscribeevent
  subscribeforum
  subscribethread
  subscription
  subscriptionlog
  teamchat
  teamjoin
  teampolls
  teams
  template
  thread
  threadrate
  threadviews
  upgradelog
  user
  user_guestbook
  user_webpage
  useractivation
  userban
  userfield
  usergroup
  usergroupleader
  usergrouprequest
  usernote
  userpromotion
  usertextfield
  usertitle
  utt_store_action
  utt_store_asvs
  utt_store_bank
  utt_store_history
  vb_jukebox_trax
  vbookie_bets_placed
  vbookie_groups
  vbookie_item_options
  vbookie_items
  vbookie_news
  word