TL783 from Texas Instruments

3-Terminal 700-mA High-Voltage Adjustable Positive Voltage Regulator

Output Adjustable From 1.25 V to 125 V
When Used With an External Resistor Divider

700-mA Output Current

Full Short-Circuit, Safe-Operating-Area, and Thermal-Shutdown Protection

0.001%/V Typical Input Voltage Regulation

Read the Data Sheet!
http://focus.ti.com/lit/ds/symlink/tl783.pdf

Less than $2 USD
HTH
-Adam-