Userinit Deleted from Registry

I was infected by a virus (again, argh!) named userinit.exe. Thanks to that anti-virus app that helped me remove the virus from my PC. But just to make sure that the virus is totally unloaded to the memory, I usually clean the registry too. Stupid me, I deleted that userinit (windows registry) line! Goodluck! I can't login. Wuhahaha. What should I do?! Everytime, I login it logs me out automatically.

First attempt:
Safe-mode
No luck.

Second attempt:
Last Known Good Configuration
It didn't work.

Research...
Third attempt:
Restore or Recovery Console using Windows XP CD
Didn't work either.

Research...
Forth attempt:
Using another computer, Connect Network Registry via Registry Editor.
Still unsuccessful.

More Research...
Fifth attempt, 4am:
Using Bart PE, http://windowsxp.mvps.org/peboot.htm
Yay! Success! After 10 years!

Please Explain

Ina, my lola, has just suffered a mild stroke last Dec. 26. Nakita na lang siya ng nanay ko na lupaypay. My mom thought she was just sleepy so they carried her and sent her to her bed. It was already 9pm when they decided to bring her to the hospital kasi wala pa ring pababago sa lola ko - mahina pa rin at hindi maintindihan ang mga salita.

She was sent to the hospital and stayed there for 5-6 days. It was found out that her left body part is numb and is suffering from a mild stroke. She's now home. Although, we still can't understand her words, I know she's recovering well.

Habang tumatagal lalo akong nasasaktan. Ang dami kong natutuklasan at nalalaman. Dati, ayokong pansinin kasi alitan nilang magpapamilya yun at anak lang ako. Kaso kung mayroon man silang problema bakit kailangan madamay ang lola ko. Nacontact ko na ang mga pinsan ko, yung iba busy, yung iba may sakit, may bisita at kung ano pang dahilan. Bakit parang wala akong marinig o maramdaman na may willing mag-alaga sa kanya. Nasasaktan ako sa mga nangyayari. Yung isa pang kapatid ng nanay ko dinedeny pa na nanay nya si Ina. =((

Ang hirap. Bakit ganun? Paki-explain naman sakin para maintindihan ko. Hindi ko talaga alam kung ano ang dapat kong gawin.