Computer software question about Windows 11 and Microsoft Office [View all]

I know this is probably the wrong forum, but I'm looking for a quick answer...

I have a Lenovo desktop PC with Windows 10 that is pretty old...maybe 8-10 years?

It is my understanding that Windows 10 will no longer be supported by Microsoft, with the deadline soon approaching.

I will be buying a new desktop with Windows 11 installed.

I have been using a ridiculously old version of Excel and Word on my desktop. These Microsoft Office versions have been installed using a CD. I think it's Office 2000?

I have thousands of Excel files with the .xls suffix.

I found a new desktop PC (I found a decent Lenovo - I like this brand) brand new, for about $400. However, there is no CD drive on the new computer, and I don't feel like buying an external optical drive just to try to install my old version of Office. Additionally, my limited Google research tells me that windows 11 will not reliably function with Office 2000.

So my plan is to also purchase a Microsoft Office 2024 software package along with the new computer.

All of the above words for one stupid question: Will the new Microsoft Office software package be able to read and use my current 20 year old .xls files? Same with my current old Microsoft Word files?

Thanks in advance for any input.