which certification

which certification should I go for MCSE2000 CISCO CCNA A+ or A+ network if I want to get a good cert (in England)to start my network career I already have exstensive computer exp fixing and upgrading, installing windows and home networking with 3 computers a hub and win 98 win2000 workstation and have been experimenting with nt4 work station and server I run a part time business configuring and supporting windows systems and fixing upgrading and building computers to earn extra money on the days when I am not at college but I want to start work as soon as possible as a network/systems engineer technition I read a lot of tech network books?