Just like in battles, in business, one has to go out and capture clients by marketing, advertising and selling properly.

Capturing clients (and keeping them) is an a serious business and companies fight for this all the time.

顧客 is customer, client
攻略 =
攻略is: capture, occupation, invasion (Nelson’s Japanese character Dictionary)
攻略するis: capture (a city); take the enemy’s position. (Shogakukan Ditionary)

http://www.resumewritingacademy.com/esummit-closing-sales.ph...

CAPTURE, COMMUNICATE & CLOSE:
Capture Clients, Communicate Your Value & Close The Sale


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Note added at 55 mins (2010-07-02 09:24:14 GMT)
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- Or, "capturing customers", depending on your translation.
- Here are some more examples for you:

http://findarticles.com/p/articles/mi_m1154/is_n2_v85/ai_190...
Capturing customers with TV retailing

http://www.ecommercetimes.com/story/66347.html
Capturing Customers During These Difficult Times

http://www.internetretailing.net/2010/05/guest-coment-how-to...
Guest comment: How to capture and keep your customers

http://inceptionspaconsulting.com/capture_clients
CAPTURE CLIENTS -
FIVE PROVEN METHODS

http://inceptionspaconsulting.com/capture_clients
Capture Clients with Words That "Hook" and Graphics That "Kick!" Do the marketing pieces you send out lack pizzazz and personality? Are they capturing the clients you want to work with? These 5 design/marketing tips will save you time in the long run and attract more customers.


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Note added at 16 hrs (2010-07-03 01:17:59 GMT)
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I just noticed the discussion. If you are looking for a noun, "capturing" is a noun as in:

Capturing of Customers or The Capturing of Customers. (or Clients)