✔ 最佳答案
I'm pleased if you could advise your order forecast / planning of repeat order for 2nd quarter of year 2009.
Okay, the grammar of your sentence is A okay. But,
一般商業上的字句不適宜用 I am pleased....
I'll appreciate it if you would advise me your order forecast (planning) of repeat orders for 2nd quarter of year 2009.
Note:
1) I am pleased... - 等於要對方奉承你?
2) forecast & planning / same meaning, you may use either one.