Linksys WRT54G2, this is all in one means
1. ADSL Router (If you are about to have new DSL Connection then you may your ISP that you dont need their router bcoz you can use the built-in one)
2. 4 Port LAN Switching ... (if you are using 04 or less PCs in a same room ... bcoz W-LAN Card PCI Based is a bit expensive starts from Rs. 750 ... and LAN is built-in on all main boards.)
3. Wireless Access Point
4. Built-in Firewall for strong security
This will cost you around Rs. 4200/- but very reliable as Linksys is a subsidry of CISCO ... if not intrested for the expensive one then DLINK, TP-LINK, ASUS .. and Chinese are available starts from Rs. 2200/- onwards ...
Decission is all yours
Cheers!!