回鄉証過期而人在國外...

go to near by China embassy for renew. they can do it.

No you have go by yourself to apply. Then you may ask somebody to pick it up for you.

My sister tried to renew hers when she was in Vancouver back in August 2008. They told her that she could only go to HK first and apply for the fastest service.

It's best to book online in advance (1-2 weeks ahead) so that you could save time.

I am not sure whether they cancelled that service because of Olympics or they don't have it ever. Try to contact your local China Travel Company - 中国旅行社 - first (if any).

没有代辦申請，要亲身去的。 因为我刚申请过知道有这件事。