Your best bet is to create a two-column table, then hide the borders so it looks better.
In Word versions prior to Word 2007:
1. Click the Table->Insert->Table menu item.
2. Give the table two columns and as many rows as you feel like. You can always add or delete rows later. If you have items in both columns that should stay adjacent to each other, make them a row.
Other thoughts:
1. To turn off the borders, click in the table, then click the Tables->Table properties menu item. Select Borders and shading and check the No Borders checkbox.
2. Even with the borders turned off, you can show the non-printing gridlines with the Table->Show Gridlines menu item.
3. You can use the first row as a table header that will be repeated on each page. To do this, click in the first row, then click the Table >Heading Rows Repeat menu item.
In Word 2007, possibly 2010:
1. Click the Insert tab on the Ribbon.
2. In the Tables group, click Table.
3. Create a two-column table with as many rows as you want. You can add more later. If you have items in both columns that should stay adjacent to each other, make them a row.
To turn off the borders
1. Right-click in the table and select Table Properties.
2. Select Borders and shading.
3. In the Preview pane, edit to suit. Clicking the No Borders box will turn off everything.
4. Click OK.
To show the non-printing gridlines instead of the borders (handy while editing)
1. Click in the table.
2. Click the Layout tab on the Ribbon.
3. Click View Gridlines.
Hope that helps.