Proscan v2 has Dyno & Drag strip recording facilities but will need an ELM compatible OBDII Serial Interface card to enable it to work on a CarPC or Laptop...
Other than that seach Ebay for a G-Tech Performance Meter. They usually sell for about £45 (rrp £149). This is a standalone box that will monitor its accelerometers, and IIRC GPS position, to produce timing figures. Or it may just be the more expensive unit they make that does GPS. There is enough info here for you to find out more...
Racelogic Vbox used super accurate GPS & accelerometers to provide a cars timing figures. It is extremely accurate and is used by most motoring magazines to get performance figures. It uses military grade GPS receivers.
GPS simply is not accurate enough for us to use for 0-60 times. It can refresh fast enough, it's just usually not more accurate than +/- 15 feet (on a good day.)
Accuracy is restricted by the US Government.
The government turned off the Selective Availability restriction in 2000. Accuracy now only depends on the number of satellites being tracked and the capability of the receiver. The +/- 15 feet accuracy is in latitude/longitude, not speed which the gps computes separately. The problem in using this for 0-60 timing is the update rate of the receiver.
why not let it take speed readings once a second, log them in a spreadsheet, and using Excel plot a graph. Then let it interpolate using the other readings... It should be quite accurate.
0-100mph gives a better real life representation of a cars performance though these days as gearing choices for 1st and 2nd can remove a gearchange (before 60mph). IE. My 200sx will just hit 70mph in 2nd.