Write some Software

I need a Windows program that can (1) take a list of strings from a text file (most strings about 30 characters or less), (2) select a *random* subset of those strings, of size n, (3) display that subset in an Excel-style grid, and then (4) cycle through the list of displayed strings at a rate of 1 per second, showing a big dot or some other indicator next to each string. This is for a contest where the object of the contest is for one person to read a random list of country names, 1 per second, and the other person has to respond with the capital of that country. The computer program is to be used by the first person, the reader. The program randomly selects and displays a list of countries, and then when the user presses "Play", the program will start displaying a dot next to the first country, then after 1 second the dot advances to the next country, etc., so that the reader knows what country they should be reading. Here's what the interface should look like: A dialog box with these controls at the top: a file selector to locate the text file with lines to be displayed, a text field to indicate the size of the subset, a text field to indicate the number of columns, a "Fill cells" button, a "Play" button, and a "Stop" button. The rest of the space of the dialog box should be occupied by an Excel-style grid -- presumably the number of rows and columns extends infinitely to the right and downward, but the dialog box only displays the upper-left-most portion of the grid. The dialog box should be resizable, and the displayed portion of the grid should expand when the dialog box is resized. The idea that on any laptop or computer where we run the program, we can resize the dialog box to fill most of the screen, in order to display as many grid cells as possible. When the user presses the "Fill cells" button, select n values from the lines in the text file, divide them (as equally as possible) into x groups where x is the number in the "number of columns" field, and then display the values in the cells in those columns. When the user presses the "Play" button, have a dot-indicator next to each string, 1 per second, moving through the list. The contents of the string should NOT move when the dot is being displayed, as this will be too jarring for the reader. (In other words, don't move the word three characters to the right, display the dot next to the word, and then move the word back to its original position when the dot is done.) One possible solution is to alternate two different types of columns: One narrow column that is just for displaying the dot, and then another wider column that is for displaying the word. When not doing playback, the "Play" button should be enabled and the "Stop" button should be disabled (and vice versa during playback). After the dot has moved through the entire list, the dot should disappear, the "Stop" button should become disabled and the "Play" button should become enabled again. Thanks!