[NTLUG:Discuss] cat 5 cable crossover and straight through

[m m]

I have another question here. please help.
 
What kind of cat 5 cable (crossover or straight through) should  I use for 
 
1. cable modem to Linux box --router (a computer NIC eth0)
2. cable modem to linksys wirwless router
3. switch to switch
4. linux box --router (a computer NIC eth1) to switch
5. cable modom to UPS
6 UPS to Linux box --router (a computer NIC eth0)
 
Thanks in advance.
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