Vcard format

Format

BEGIN:VCARD
VERSION:3.0
EMAIL;TYPE=work:[email protected]
EMAIL;TYPE=home:[email protected]
EMAIL;TYPE=internet:[email protected]
ADR;TYPE=work:;;62 something Drive.;sometown ;province/state;zip code/postal;country
ADR;TYPE=home:;;123 Fake st;Springfield;MO;90222;USA
BDAY:
NICKNAME:SomenickName
TEL;TYPE=work:555-555-5555
TEL;TYPE=work,fax:555-555-5555
TEL;TYPE=home:555-555-5555
TEL;TYPE=home,fax:555-555-5555
TEL;TYPE=cell:555-555-5555
FN:first last
NOTE:I am a note: Hi mom
URL:www.domain.com
N:Last;first;;;N/A
TITLE:sometitle
ORG:companyname
END:VCARD

Combining Several into one in windows

If you're using windows:
GOTO Command prompt. (Windows_Key + R)
Run: cmd
Change to the directory where all your VCFs are stored
cd \foldernamewheretheyexist
Run this command
copy /B *.vcf all_in_one.vcf

Source:

http://www.toptrix.net/2011/01/merging-many-vcf-files-in-to-one.html