Since I can't find your files, I'll do a bit of guessing. There are two important factors here. First, how is the timestamp value stored? Is it in LabVIEW format (the number of seconds that have passed since Jan 1904) or is it in a string format (i.e. 08/12/2003 19:32)? The second is what do you mean by "real time basis"? Is the file being updated constantly or do you just mean displaying the correct time and temperature?
To read the data you should use the "Read from spreadsheet file" VI in the File I/O pallete and you'll recieve a 2D Double array. If the file is saved in LV format this is good, but if it's another, you'll have to change the read VI to output a string array. Once you have the array, you convert it into an array of clusters, each holding the temp and the timestamp and you wire that into your graph. you set your X axis to absolute time (right click the axis and select "format and precision") and that's it. Now, if your timestamp isn't LV, you'll have to convert it by taking it apart and rebuilding it using the cluster. These things can be seen in the attached LLB. All this is only relevant if you're not trying to get the data in real time. If you need more help, write in with some more details.
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