4 season gear list himalya backpacking

You shouldn't have any trouble getting people to toss gear lists at you but you should consider a backpack security system like the pac-safe.
It is astounding how quickly stuff disappers in India and Nepal while getting about….of course you can buy it all back the next day in Kathmandu. I'm not trying to single out a particular group of people, I've "lost" more equipment at Norte America trailheads then anywhere else in the world. Actually the only thing I've ever had stolen was a pot on one of the Mexican volcanos and it's a fair chance it was a rodent.
Theft,slash and run, and bakeesh[another different form of theft] seem to becoming more common reading around the climbing and trekking blogs. I think Lonely Planet has some content relating to this.

Thanks but I nepal is not on the list right this moment. It's just that it'd be great if people who have done such trips in himalayas/similar alpine environments could share their gear list, I could have a general discussion with them and start buying stuff.

I have looked at NOLS list and would like to go as lightweight as possible without sacrificing safety/durability too much.
Check the course description and Equipment Lists:
http://www.nols.edu/courses/locations/india/himalayabackpacking.shtml
http://www.nols.edu/courses/locations/india/himalaya.shtml

1)I would go with western mountaineering bag. If the maximum I want to aim for is -20, what is the temp rating I can get away with. Some one suggested a 10 degree higher bag is ok as you can make up the rest with a bag liner/clothing combo/vapor liner.

2)I know the safe choice is capilene or smartwool's merino for base and the r1 hoody/LS Featherweight PowerDry Zip Neck for midlayers.Houdini wind shirt /similar stuff would be the next layer followed by Micropuff Vest/Thermawrap Vest + PolarBuff.Micropuff Pullover/Thermawrap Jacket + GoLite SnowCap would be the last layer.

To be more accurate I could calculate dry Iclu clo value of the ensemble I wish to buy.link:
http://www.backpackinglight.com/cgi-bin/backpackinglight/xdpy/forum_thread/9378/index.html

Is this accurate ? This post is six months old. Is there any changes to these layers in terms of newer products that any of you wish to share with me ?
3)This post only talk about 0 f. what if it's lower than that. How would I make up for it in terms of clothing

4)Which brand backpacking boots,mountaineering boots,snow shoes are recommended ? I know la sportiva makalu,koflach arctis,msr ascent/yowies/northern lites are possibilities.
Any insulating wear jackets,belay jackets etc recommended. I missed the das parka sale :(

5)Gaiters are pretty much decided with OR crocs being the most used ones.polar bluff neck gaiters look good.
How about gloves ?

I would appreciate any and all guidance. I am also trying to keep costs reasonable but also realize a lot of equipment is going to last a long time.
Lastly I'm of Indian origin and plan to go back. So I would like to take as much gear as possible back with me.

4 season?? Are you planning on being out in the high areas mid winter? Or down in the lowlands? What type of skis are you bringing?

Jack,
I'm planning on trekking some of the popular mountain passes,routes etc. Please check my first post as an example for the kind of routes I plan to do.

Here's one from one of the indian state government agency. These are some of the main routes I plan to undertake:

http://www.gmvnl.com/newgmvn/sports/trekdetail.aspx
http://www.kmvn.org/trekkingroute.aspx
http://www.himachaltourism.nic.in/trek.htm

I also plan to live in the area. Skiing is a possibility(http://www.gmvnl.com/newgmvn/districts/chamoli/skiing.aspx). I did not want to clutter the post So did not talk about it.
I plan to start out with snowshoes.

here are some pictures of the trek routes I plan to do

http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=17
http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=19

http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=63

http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=222

http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=223

http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=68

List :
http://himalayancamping.com/modules.php?name=Content&pa=showpage&pid=7