Unless the Netgear router does not do ADSL2 and you have a new fancy high speed service you could also consider using the Netgear router on your sky broadband.
A dsl router is a dsl router is a dsl router. Near enough.
Some are locked to the isp by disabling the means to change part of the user id in the setup screens. This can be often be worked round. I have un-skyed a speedtouch router I bought in a charity shop for example.
You may be able to read the user/password combination out of the sky router, otherwise if you call sky they will tell you your user/password combination and you will get the other stuff, VPI/VCI etc., somewhere on-line. Most UK ISP's use the same settings but there are exceptions.
NEVER though confess to sky support that you are not using their router;-) They may well just stop talking to you. This is understandable of course since they do not want to train their personnel in every possible kind of router.
Linksys Router and Sky Broadband - Setup help need :: General Broadband Chatter :: think broadband
"1. Select RFC 2364 PPPoA from the Encapsulation drop-down menu.
2. For the Virtual Circuit ID, enter 0 for the VPI and 38 for the VCI.
3. Select VC for Multiplexing.
4. Select Multimode from the DSL Modulation drop-down menu.
5. Enter the User Name and Password details that you obtained from your sky router"