Is there a way to manually repair a registry key?

I have been infected with the XP Antirivus 2008 virus, and despite spending 4 days reading and re-reading about the manual removal, I just can’t get rid of it. I don’t have a real antivirus program other than AVG. I have downloaded both Spyware Doctor and Search and Destroy on the advice of other people in this forum and on the internet, but I can’t buy either copies — which means that I am manually deleting files.

Spyware Doctor has informed me that several of the registry keys require "repair." I am presuming that outright deleting them will be a bad idea.

So, is there something that I can do to manually repair the registry keys affected by the virus, or can I just delete them?

Registry value to be repaired: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\Current Versio\Winlogon, userinit

PS. Everytime I try to download CCleaner, Tuneup2008, etc… Please, don’t recommend anymore downloads!!!
I said "no downloads" is because every time I open a new window it is replaced with an ad instead of the page I wanted to view — which means that I can type all kinds of links and addresses, but the legitimate sites never turn up, they are replaced by ads. Backspace will not work to go back to the legit site.

Further, on occasions where this doesn’t happen and I CAN download a program, when I open it, I am ALWAYS told that the setup files have been corrupted.

So – My computer won’t let me open webpages that include ANY keywords or meta tags regarding viruses, and almost NO antivirus programs can even be installed on my computer after download because supposedly ‘corrupted’ – including malwarebytes.

This is the only reason I’m resorting to manual repair.

Is there such a thing as a safe free registry cleaner?

Is there a free registry cleaner which is safe to use and can be trusted?

Is there any FREE registry scan and repair tools online?

I have tried a couple that said FREE (even freeware), but they only scanned my computer and found the errors, you had to PAY for the programme to fix the errors. Are there any FREE scan AND repair tools out there.

Please nothing from the Windows site, because I cannot pass genuine advantage, so cannot download anything from there.

Thanks for any help.

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registry repair programs for vista.?

I have purchased and returned three different registry repair programs for vista they do not work some of them delete their own addon software. some just do not work. some delete your media player and games. so save your money and time do not buy them I think they are scams.
I tried uniblue, registry fix, and regcure.
all were guarenteed to work for vista

if i scan to analyze the free eusing registry cleaner and it shows 300 mistakes is it good to delete these -?

these errors by using the free EUSING REGISTRY CLEANER? who else uses this,how often and do you trust it? thanks!

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