Ok so it all arrived today in a nice, clean and shiny fashion 
It's all being set up in a Thermaltake Aguila case and so far the mboard, cpu, cpu cooler, psu and memory are all in the case and seem to be fine.
I'm having trouble with some of the internal connecters and jumpers. I've tried comparing them to my current machine but I decided that was unwise. Most of them are labelled with an S on one side, and from reading the manuals for both case and mboard I'm still unsure about how they're correctly placed. There are cables labelled IEEE1394, these aren't too much of a problem as I've figured the manuals on them and they're mainly single pin. Ditto with the 2 USB2.0 cables as they're 5 pin connecters and are pretty straight forward. The ones I'm having trouble with are the case LED connecters. These are 2 and 3 pin connecters marked with an S on the end of the cable, and called Power LED, Power SW and so on. What way should these be connected with regards the S?
Also, exluding the floppy drive, does it matter about the cable used to connect your optical drives? There is a cable labelled HDD Cable, but since my HD is SATA I figured it would be okay to use that, and also because its the only other one. I connected the PSU cables with a 1 cable run for the SATA and 1 run for the two optical drives.
They're the problems I'm having right now, but I'm sure more will arise.
If I did manage to mess a cable up or put one in the wrong place, what are the consequences? I cant really damage my system by hooking up, say, and optical drive wrong, could I?
Thanks

It's all being set up in a Thermaltake Aguila case and so far the mboard, cpu, cpu cooler, psu and memory are all in the case and seem to be fine.
I'm having trouble with some of the internal connecters and jumpers. I've tried comparing them to my current machine but I decided that was unwise. Most of them are labelled with an S on one side, and from reading the manuals for both case and mboard I'm still unsure about how they're correctly placed. There are cables labelled IEEE1394, these aren't too much of a problem as I've figured the manuals on them and they're mainly single pin. Ditto with the 2 USB2.0 cables as they're 5 pin connecters and are pretty straight forward. The ones I'm having trouble with are the case LED connecters. These are 2 and 3 pin connecters marked with an S on the end of the cable, and called Power LED, Power SW and so on. What way should these be connected with regards the S?
Also, exluding the floppy drive, does it matter about the cable used to connect your optical drives? There is a cable labelled HDD Cable, but since my HD is SATA I figured it would be okay to use that, and also because its the only other one. I connected the PSU cables with a 1 cable run for the SATA and 1 run for the two optical drives.
They're the problems I'm having right now, but I'm sure more will arise.
If I did manage to mess a cable up or put one in the wrong place, what are the consequences? I cant really damage my system by hooking up, say, and optical drive wrong, could I?
Thanks