先谢谢8老师之前的帮助。
我现在上网填完了DS-160 表给我妈申请B-2签证，但是怎么都不能figure out怎么付费。我妈是不是需要DS-160 application ID和receipt才能打电话去成都美领馆预约签证？
-Read the links for how to pay the fee:
http://www.ustraveldocs.com/cn_zh/cn-niv-paymentinfo.asp
http://www.ustraveldocs.com/cn_zh/cn-niv-visafeeinfo.asp
Follow the instructions (step by step) at this website for the B-2 visa application:
http://www.ustraveldocs.com/cn_zh/cn-niv-typeb1b2.asp
谢谢8老师！
