Need help, how i can add slic 2.1 to my HP Compaq DC5800

Help!

If anybody can have a look at this one for me. What im trying to do is flash my bios so its updated to Slic 2.1. Im having a really hard time figuring it out on my own. I would like to be able to instal Windows 7 on my pc. I also hope this is the right place to put my request. Ive been awake far too long and my brain is kinda fried. I always try to do it on my own but this proves to difficult a task for me. So please help me out i will be forever greatfull for any help i can get.

Thanks in Advance, Kelly

-Manufacturer:
-Motherboard Model: HP Compaq DC5800
-Bios revision: 786F2 V 01.51 (1-8-2008) <---- current one but there is a more recent one is 1.59 Rev. A (15 Aug 2011)
-Bios Type: Phoenix BIOS I think but not sure
-Bios Download Link: http://h20565.www2.hp.com/portal/site/hp...cachetoken
-RW Everything Report Download Link http://www.sendspace.com/file/50g54j

I also upload screens shots that might prove usefull if i havent added enough info. If anything else is needed ill make sure to give it my best shot at providing it.