no, but very likely less crowded.
5ghz has a somewhat shorter range however.
No. If your computer's motherboard cannot overclock and if you do not have enough power and cooling for overclocking, you won't be able to do it. At the worst, you will burn out your computer parts.
Assembled computers usually are much better than brand computers, sometimes 18GB of RAM, 5GHz processor, HD graphics, 2TB disk, maybe more. Newer computers today have 4GB of ram, 600GB disk, 2GHz CPU, and a DVD writer.
5GHz with a speed of up to 54Mbps
no it can't be
exactly what you mean in question. wireless is a broad subject for example wireless LANs enable you to build computer networks without wires. IEEE standards for wireless LANs are 802.11a (5ghz) and 802.11b/g (2.4ghz)
Wireless standard A and Dual-Band N.
5Ghz
In IT field, dual band is associated with the wireless router. This router handles frequency bands of 802.11. Dual band routers support 11a users in 5GHz band and 11b/g users on the band of 2.4GHz.
802.11n and 802.11a
Linksys (bought by Cisco) is a very good router. There shouldn't be a problem using it with a 1525.
yes
wireless devices can be every device equipped with either 802.11a (5ghz) or 802.11b/g (2.4ghz) radio card they are PCs with wireless NICs; notebooks; PDAs and so on..