Here's a list of potential Prefixes and Suffixes that will help you turn one word into dozens of possibilities.  Put these in front or back of your core word and give them a try.

(And it doesn't matter if it makes the word/number over 7 digits.  Everything after 7 is just ignored)

2
321
4
4 THE
411
800
911
ABC
ABOUT
ACE
ADVICE
ALL
AN
ASK
AVE
BEST
BIG
BOY
BY
CALL
CENTER
CITY
CLUB
COM
CYBER
DEAL
DIAL
E
ENJOY
FACT
FAST
FAX
FIND
FIRST
FOR
FREE
GAL
GET
GIFT
GIRL
GO
GOOD
GOT
GREAT
GUY
HAVE
HELLO
HELP
HI
HOT
I LOVE
IN
INFO
JUST
KID
KNOW
LAB
LANE
LET
LIFE
LINE
LINK
MALL
MAN
MARKET
MAX
MORE
MY
NATION
NET
NEW
NEWS
NEXT
NOW
NUM
OK
ON
ONE
ONLINE
ONLY
OUR
OUTLET
PAGE
PC
PHASE
PHONE
PICK
PLAN
PLUS
PRO
PURE
REAL
RIGHT
RING
RITE
SALE
SEARCH
SEE
SEND
SERVICE
SHOP
SITE
STAR
STORE
STUFF
SUPER
THE
TIP
TO
TOP
TRUE
TRY
USA
VALUE
VILLE
VISIT
WAVE
WAY
WE
WEB
WOMAN
WORLD
WWW
YOUR

There are certainly a lot more, but this will get you started. 
Call me at 1-800 627-5383 if you have any other questions or need more help!