Windows Vista Error Loading Hutijezu.dll

I don't even know where to begin! I got a trojan key logger last night and we don't know where from. I had someone work on my computer today and it seemed to do the trick. After they worked on everything I ran scans on "AVG ANTI-VIRUS AND MALWAREBYTES' ANTI MALWARE" which are the programs I have. It showed I had a few threats and one of them was c:/programdata/waluyelo. I have windows vista so I had to go to start, run and search for c:/programdata to even see this folder. Well while going there I found a bunch more folders (about 13) that his trojan has installed. I went into safe mode and deleted them, restarted and deleted them out of the recycle bin. Does this mean they are gone for good? I'm running the AVG and it's not showing anything in the c:/program data as coming up as a threat. I now have three items showing as a threat in my temporary internet files folder. How do I get rid of these?

When I restarted it showed an window saying "ERROR LOADING HUTIJEZU.DLL "

I searched for hutijezu.dll and there is not anything to be found about it. I have no idea what to do. Does anyone have any clue what i'm trying to say or can anyone help me???