DarkAngel asked about the settings in Configure>Images. They are:

Small Image Width - 100
Small Image Height - 100
Heading Image Width - Admin 57
Heading Image Height - Admin 40
Subcategory Image Width - 100
Subcategory Image Height - 57
Calculate Image Size - true
Image Required - true
Image - Shopping Cart Status - 0
Image - Shopping Cart Width - 50
Image - Shopping Cart Height - 40
Category Icon Image Width - Product Info Pages - 57
Category Icon Image Height - Product Info Pages - 40
Top Subcategory Image Width - 81
Top Subcategory Image Height - 57
Product Info - Image Width - 200
Product Info - Image Height - 200
Product Info - Image Medium Suffix - _MED
Product Info - Image Large Suffix - _LRG
Product Info - Number of Additional Images per Row - 3
Image - Product Listing Width - 100
Image - Product Listing Height - 100
Image - Product New Listing Width - 100
Image - Product New Listing Height - 100
Image - New Products Width - 100
Image - New Products Height - 100
Image - Featured Products Width - 100
Image - Featured Products Height - 100
Image - Product All Listing Width - 100
Image - Product All Listing Height - 100
Product Image - No Image Status - 1
Product Image - No Image picture - no_picture.gif
Image - Use Proportional Images on Products and Categories - 1
IH resize images - yes
IH small image filetype - no_change
IH small image background - 255:255:255
IH watermark small images- no
IH zoom small images - yes
IH small image hotzone - no
IH small image compression quality - 85
IH medium image filetype - no_change
IH medium image background - 255:255:255
IH watermark medium images - no
IH zoom medium images - no
IH medium image hotzone - no
IH medium image compression quality - 85
IH large image filetype - no_change
IH large image background - 255:255:255
IH watermark large images - no
IH large image compression quality - 85
IH large image maximum width - 750
IH large image maximum height - 550
IH watermark gravity - Center
IH zoom gravity - SouthEast