Connecting 2 ISPs to 1 Network

I am in a position where i have 2 ISPs and 1 D-link DI-524 and D-link DSL-500T and a 8 hub ethernet switch and i want to connect both the connections to 6 systems. i heard that its possible but dont relly know how to connect please help me regarding this and please send me a mail on santoshsanny@yahoo.com thank you so much…