Here is a guide on ONE way on how to set up your Diseqc switch in My Theatre.
First, take your satellites and plug them into your diseqc switch, preferrably with short coaxial cables and one long cable running to your PCI card in your computer. Remember which satellite is in what port. For example, if you put hooked up "Telestar" into LNB 1 of your Diseqc remember that for when you are scanning for your channels.
Now, open up My Theatre. Right click the big black square (where TV image would appear), Choose Settings, then LNB/Diseqc settings & Scan. Find the satellite in the large list that you have in LNB 1 of your diseqc switch and double click it. Now underneath that large box you should see the name of the satellite in which you just double clicked in the box above. To the right you should see a button name "DiSEqC", click that button and a box will pop up. Make sure "First DiSEqC Switch" is checked and then in the dropdown box choose Commited, LNB1. Now hit OK. Now change LOF1 to 11250000, leave SW at 0, and change LOF2 to 11250000 also. Hit apply to the right of KU-Band (bottom left). Now in the right box, his Sel All and then hit Scan. It should start downloading your channels. If it says no signal, reboot your computer, double check your connections and your signal.
Do the same for LNB 2, 3, and 4.
First, take your satellites and plug them into your diseqc switch, preferrably with short coaxial cables and one long cable running to your PCI card in your computer. Remember which satellite is in what port. For example, if you put hooked up "Telestar" into LNB 1 of your Diseqc remember that for when you are scanning for your channels.
Now, open up My Theatre. Right click the big black square (where TV image would appear), Choose Settings, then LNB/Diseqc settings & Scan. Find the satellite in the large list that you have in LNB 1 of your diseqc switch and double click it. Now underneath that large box you should see the name of the satellite in which you just double clicked in the box above. To the right you should see a button name "DiSEqC", click that button and a box will pop up. Make sure "First DiSEqC Switch" is checked and then in the dropdown box choose Commited, LNB1. Now hit OK. Now change LOF1 to 11250000, leave SW at 0, and change LOF2 to 11250000 also. Hit apply to the right of KU-Band (bottom left). Now in the right box, his Sel All and then hit Scan. It should start downloading your channels. If it says no signal, reboot your computer, double check your connections and your signal.
Do the same for LNB 2, 3, and 4.