amers previous thread click here
.ini files are configuration settings files i believe.to be honest i would just click tools/folder options/view and put a tick do not show hidden files and leave them to be safe.
if you want you could always move anything like this to the bin and use the computer for a while,if no problems then it should be safe to delete it completly.
cleanup does a good job of removing uneeded files safely click here
spybot and adaware search for and remove nasties that your av doesnt pick up click here click here and spywareblaster keeps nasties from getting back on again click here all three if kept up to date and run often should keep you safe.