Keylogger removal

Hey guys, I'm new here, I was going to post in the welcome forum but it's a little urgent, was hoping you'd be able to help me with removing a keylogger

I haven't managed to complete a virus scan yet, my scanner crashed half way through, and Microsoft's MRT was taking about 5 hours and wasn't getting anywhere. I'm considering running it over night after attempting another full virus scan.

So basically, I haven't found the keylogger yet but I know it's there, as people in South Korea keep logging in to my Twitter and Facebook accounts, after I've changed the password on this machine.

RogueKiller report dump:

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RogueKiller V8.7.1 _x64_ [Oct 3 2013] by Tigzy
mail : tigzyRK<at>gmail<dot>com
Feedback : http://www.adlice.com/forum/
Website : http://www.adlice.com/softwares/roguekiller/
Blog : http://tigzyrk.blogspot.com/

Operating System : Windows 7 (6.1.7601 Service Pack 1) 64 bits version
Started in : Normal mode
User : Mark [Admin rights]
Mode : Scan -- Date : 10/06/2013 22:09:49
| ARK || FAK || MBR |

¤¤¤ Bad processes : 0 ¤¤¤

¤¤¤ Registry Entries : 3 ¤¤¤
[HJ SMENU][PUM] HKCU\[...]\Advanced : Start_ShowMyGames (0) -> FOUND
[HJ DESK][PUM] HKLM\[...]\NewStartPanel : {59031a47-3f72-44a7-89c5-5595fe6b30ee} (1) -> FOUND
[HJ DESK][PUM] HKLM\[...]\NewStartPanel : {20D04FE0-3AEA-1069-A2D8-08002B30309D} (1) -> FOUND

¤¤¤ Scheduled tasks : 0 ¤¤¤

¤¤¤ Startup Entries : 0 ¤¤¤

¤¤¤ Web browsers : 0 ¤¤¤

¤¤¤ Particular Files / Folders: ¤¤¤

¤¤¤ Driver : [NOT LOADED 0x0] ¤¤¤

¤¤¤ External Hives: ¤¤¤

¤¤¤ Infection : ¤¤¤

¤¤¤ HOSTS File: ¤¤¤
--> %SystemRoot%\System32\drivers\etc\hosts




¤¤¤ MBR Check: ¤¤¤

+++++ PhysicalDrive0: (\\.\PHYSICALDRIVE0 @ IDE) (Standard disk drives) - ST3500418AS ATA Device +++++
--- User ---
[MBR] 4b868d190574aa2c63212bf267c2365e
[BSP] ed7d75d556a8e8a2306fa2db1e3ce6c2 : Windows XP MBR Code
Partition table:
0 - [XXXXXX] NTFS (0x07) [VISIBLE] Offset (sectors): 63 | Size: 476929 Mo
User = LL1 ... OK!
User = LL2 ... OK!

+++++ PhysicalDrive1: (\\.\PHYSICALDRIVE1 @ IDE) (Standard disk drives) - ST3160023AS ATA Device +++++
--- User ---
[MBR] 39bdd95356941540a4307d92fc08b8e9
[BSP] 275afb90563d046e197708fdd7e5d4dd : Windows 7/8 MBR Code
Partition table:
0 - [ACTIVE] NTFS (0x07) [VISIBLE] Offset (sectors): 2048 | Size: 100 Mo
1 - [XXXXXX] NTFS (0x07) [VISIBLE] Offset (sectors): 206848 | Size: 152485 Mo
User = LL1 ... OK!
User = LL2 ... OK!

+++++ PhysicalDrive2: (\\.\PHYSICALDRIVE2 @ IDE) (Standard disk drives) - HDT722525DLA380 ATA Device +++++
--- User ---
[MBR] 6ff35d1d867943498b9fb7c70ddcb173
[BSP] 1a3dd7d9b856b018dc22324106968dc4 : Windows XP MBR Code
Partition table:
0 - [XXXXXX] NTFS (0x07) [VISIBLE] Offset (sectors): 63 | Size: 238464 Mo
User = LL1 ... OK!
User = LL2 ... OK!

Finished : << RKreport[0]_S_10062013_220949.txt >>

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So yeah, any tips for making sure this thing is off my system? Normally I would just flatten my install, but I fancy the challenge of doing it the right way instead of what is essentially the "have you tried turning it off and on again?" of virus removal.