I've been a ranger advocate for a good while now. I feel like I've got a build and play style that compliments the rangers bouquet of abilities. If my ranger was a pig at the butcher then the only thing that would be left unused would be his squeal. I've turned my eye to the daunting task of creating a competent rogue that would be welcome in any party in any quest, traps or no. Can any of you fine enthusiasts give me some of your best advice on rogue combat, weapon choices, support activities through umd, and so forth or direct me to a link that would do the same? I've got a viable build that uses UMD, finesse, dimplomacy and have no intentions of multi classing. I've done my homework on trap smithing so I'm pretty much looking for good stuff for the heat of the moment to increase my combat usefulness to the group.
Edit: He's an elf. Enhancement advice also welcome.