Standard Formats:
Standard 300x250 30k
Standard 728x90 30k
Standard 468x60 30k
Standard 120x600 30k
Standard 160x600 30k

Enhanced Formats:
Enhanced 300x250 2.2mb
Enhanced 728x90 2.2mb
Enhanced 160x600 2.2mb

Overlay:
Overlay 500x500 2.2mb

IGN Format:
IGN 400x600 2.2mb

MSN Formats:
Standard 234x60 30k
Standard Unexpanded 234x60 30k
Enhanced Expanded 300x250 2.2mb

Expandable Formats:
Expandable 728x300 2.2mb
Expandable 468x300 2.2mb
Expandable 300x600 2.2mb
Expandable 450x300 2.2mb