The following is for you Virgin Mobile Chaser Users looking all over the internet for root instructions you can trust and are up to date, I'm just trying to pay it forward :
Like the guy said...**be careful** but I have this same phone and rooted it.If you do anything different than Im about to tell you, you better know what your doing.
1.Go here
Rooting a Chaser - Android Forums
2.Read Everything.
3.I followed this guys instructions:
http://imgur.com/y1p44Es.jpg
http://imgur.com/xqQAgH7.jpg
4.Pay close attention to his instructions.Because when you run poot it will say you failed(an error message) but its not true.Just restart your phone from there.
5.Also, .I had trouble finding the files because you have to go to the full site NOT the mobile site to be able to download them, but they are there :
http://imgur.com/wUFu517.jpg
You just have to go to the bottom of site and go to the full site.
6.Get Root Checker from google play
http://imgur.com/9rZjnlX.jpg and you will know if you are rooted.
7.These are all the apps you need.
http://imgur.com/cgf15W1.jpg
8.Get Superuser first.
9.Use Titanium Backup to first backup the apps you want to move and then you can move whatever apps you want to the sd card. Except for YouTube and google play unless you get paid version and convert them first to user apps.
10.Root Unistaller is what I used to delete these:
http://imgur.com/ccoAbS7.jpg
All the ones with lines through them.I suggest you make backups in case but Ive had no problems from deleting these.If you delete anymore I can't say if its safe or not.
11.As you can see the screenshot app i use works perfect on this phone.The others had a blue tint.
12.You can use root browser to move media files onto your phone instead of your sd.
13.I was too scared to try the custom rom thingy...too many said it ****** thier phone..
14.So in closing like I said.You do anything outside the guidelines I cant tell you about it but all this worked fine for me.Ill check back to see how it went for you.