Help Soldering Vias

[JPunisher]

I've been practicing soldering on an old motherboard and i'm just about ready to try the PS2 but I am having trouble soldering to vias. What I do is scrape the via with an exacto knife. Then I tin the wire. Then I insert the wire in the hole and warm the via and the wire together. The thing is that how do I know that I did it right. In a previous post lufcfan posted this website http://www.cyber-mag.com/station/ps2tips.htm . Here they say that I should fill up the hole with solder and create a pad, but the via is too small to do that. Any suggestions?