If you are just starting out you will get over 2 million in your network within 3 days.
First of all, you may want to open the file in Excel just to look at the data because it's interesting to see who these people are. It shows their industry, number of contacts, location etc. Do NOT email them directly, or it will be spamming. The emails need to be their in order for Linkedin to send the invitations.
GTD INSTRUCTIONS TO SEND INVITATIONS:
Login to your Linkedin profile
Click [my contacts] tab at right
Click [Connections] in grey bar menu toward left
Click [Add Connections] (next to the green + sign)
Click [Don't use webmail?] at lower right of page
Click [Browse] and find the file that was attached to the email I sent you.
It's named "LinkedinBuilder dot com SuperConnectors.CSV"
If it's not on your computer yet, go back in the email, and download the file to your desktop first.
click [Upload Contacts File]
you will get a sample data from the file
click [Finish upload]
checkmark [All contacts]
checkmark [Select All]
Checkmark [Add a personal note to your invitation]
The subject line is not customizable, it will say "Invitation to connect on Linkedin" when it is sent.
fill in custom invitation (don't use boilerplate!), see advice in next reply below.
click blue button [Invite selected contacts]
happy networking!
B.G.
P.S. be sure your profile is complete and interesting. At least title, current and past work, summary and specialties.
In a couple days you'll receive another email from me with some tips on how to improve your profile and do effective lead generation, so keep a watch for it.
If you value your time and want to have all this stuff done for you (and learn about it as we go) check out the PROFESSIONAL subscription offer here. You can have 5 million in your network in just a few days without you having to press a single key!
http://www.linkedin-entrepreneurs.com/group/HowToBuilda6MillionNetw...
(includes 4 day free trial. Cancel before day 5 and pay nothing)