Without going too deeply into technical matters, you should check that the router has the possibility to restrict the wireless access to explicitly declared computers only (so that neighbours or passers-by do not use your internet access to connect - when they go surfing, they are seen as yourself by your ISP and you may not like that)
Another good point using such a router is that they usually come with a built-in firewall.
The Netgear stuff does it all
WEP encryption will only protect you from eavesdropping (not a very strong algoritm, but good enough for home use)
Found on the Netgear website,
"10 Steps to Wireless Security" - Guide to taking steps to protect your wireless network and
a glossary (both in PDF format, you will need Acrobat Reader)