This is true. It is not specifically directed to us however is there a reason why He would respond differently to us if we did this? Ultimately this is what He desires from all of us, isn't it?
It's late here so if you reply send it to me vie e-mail also. I don't mind correction. I also take the Old Testament seriously when it comes to what pleases God. he is unchanging in nature.
"...is there a reason why He would respond differently to us if we did this?"
Yes. Look at the context of II Chronicles 7 again:
"When I shut up the heavens so that there is no rain, or command locusts to devour the land or send a plague among my people, if my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land."
The Lord here is telling Solomon that when HE judges the land and people, that if His people...etc.
The last outpouring of God's wrath (judgement) on mankind was at Calvary, which Christ took on the cross for all of us.
If we are indeed in the dispensation of God's grace, and the next period of God's judgement on man won't come until the Great Tribulation, then the we no longer require the Temple in which to offer sacrifices and prayers to cause God to heal that which He has not caused.
In other words, those who believe in Christ are no longer under God's judgement, and those who do not believe have already been judged. No amount of prayer by believers or non-believers will change what God has already done through Christ.
I think anyone reading this passage needs to read it in the context of God's judgement.
And if anyone can see something I'm missing here, please feel free to speak up. :)
Later...