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Please look up the Range object. Every Range has the same properties. You will find them all listed and explained at the linked MSDN site. You will also find them listed in VBE's Object Browser.
Among the properties every Range has are the Address, the Row and the Column. Row and Column are numbers. The Address is a string like $A$4. Bear in mind that a Range can be a single cell or any number of cell together. This is why another property is the Count property which tells you how many cells there are. There are also the Rows and Columns properties (plural) which return collections of rows and columns and have their own Item and Count properties. This enables queries like MyRange.Rows.Count which returns a number and MyRange.Rows(1) which returns a Range. Don't forget that every range has the same properties. Therefore MyRange.Rows(1).Row will return 1.
Back to your question: Your Find function returns a Range. You called it ThisPos. You asked for ThisPos.Address which returns a string. (ThisPos.Address(0, 0) would return a string without the $ signs.) ThisPos.Column would give you the column number, ThisPos.Row it's row number. You can construct circular references, like Range(ThisPos.Address).Column. They serve no useful purpose. ThisPos.Column would return the same number.
Columns(10).Address or Range("I:I").Column enable conversion between letter and number but you are right: the letter is really of little use in VBA programming because the number is so much more flexible.
